When to plant mandevilla?

There are many varieties of the tropical vining flowers we call the Mandevilla plant, and all are gorgeous and showy.

The Mandevilla vine (rocktrumpet plant) has become a popular spring garden center item over the past few years.

The vigorous Mandevilla vine makes an excellent spring and summertime addition to any landscape, patio or trellis vines and overwinter nicely indoors during the cold winter months.

In this article, we will share everything you need to know about growing, propagating and caring for the tropical Mandevilla vine. Read on to learn more.

Contents

Mandevilla Plant vs. Dipladenia Plant

The Mandevilla (Man-de-vil’lah) plant got its name from Henry Joseph Mandeville a gardener and British diplomat in 19th-century Argentina.

You’ll easily recognize this lovely tropical Mandevilla plant by its glossy oval leaves, colorful trumpet-shaped flowers, and enthusiastic vining habits. The Mandevilla vine is excellent for:

  • Growing up Arches
  • Use as pergola plants
  • Growing as a trellised potted flowering vine on a patio

Dipladenia bush (Dip-lah-dee’-ni-a) is a popular cousin of the Mandevilla vine.

Its flowers and foliage are very similar, but its growth habits are quite different.

The Dipladenia plant grows as a shrub and is an excellent choice in the landscape, growing in a container or hanging basket.

The two types of plants require almost identical care, with the only notable difference involving pruning.

Both types can be used in the landscape, in containers (provide a trellis), in hanging baskets.

Use Mandevilla vine when you want a climbing plant. A flowering Mandevilla trellis on a patio creates a beautiful look.

Use Dipladenia when you want a bushy plant.

Both the Mandevilla plant and Dipladenia are easy to care for during the growing season.

Both types are rampantly floriferous from spring to autumn.

They make great companions for one another in large planters or in a flowerbed setting.

The Mandevilla vine is also one of the top flowers that hummingbirds like.

What Are The Requirements And Tips For Growing Dipladenia and Mandevilla Vine?

These tropical vines like bright light, warmth, good drainage and protection.

Choosing the right location in the garden and preparing the soil well are the first necessary steps for success when growing Mandevilla and Dipladenia.

Monrovia Plant Expert Shares How to Garden With Sun Parasol Mandevilla

The Suntory Collection of “Mandevilla Sun Parasol” offers many different uses in the garden.

They make wonderful container plants growing as a small bush on a patio, planted in large tubs at hotels and even as hanging baskets.

With both bush types and vining varieties (which reach 4′ or 5′ feet high) become covered with rich, vibrant, colorful blooms.

The Sun Parasol Mandevilla collection are not messy plants making them perfect for use around a pool or on a patio.

Our current favorites: Sun Parasol Pretty Pink Mandevilla and the New Sun Parasol Red Emperor Mandevilla. More ideas in the video.

Providing Just The Right Amount Of Sun

The foliage of the Mandevilla plant is certainly attractive, but the showy flowers are the real show-stopper.

To be sure of ample, healthy blooms, you must place your Mandevilla in an area where it can stay warm and get plenty of bright, indirect light.

You’ll find the Mandevilla plant growing in full sun in south Florida, but they seem to do better with a light bit of shading.

If you don’t provide enough bright light, you won’t get a good showing of flowers.

A high shade setting that receives good sun in the morning and/or afternoon but sheltered at high noon is ideal.

Protect the Mandevilla vine from strong winds is also conducive to healthy flower production.

Drainage And Watering

The Mandevilla plant and Dipladenia like to be consistently moist. Allow the soil to get almost dry between waterings.

Provide a slow, steady trickle of water on a weekly basis. Soak the soil thoroughly, and be sure the plant has good drainage.

The Mandevilla plant does not like to stand in water and will develop root rot if not properly drained.

Adjust your watering schedule as needed if you notice signs of plant distress.

If you are keeping your plant indoors, spray the leaves daily to keep humidity levels adequate.

If you water outdoors with a hose, treat your Mandevilla to a shower to clean the leaves and provide moisture.

Choose The Correct Pot Size

When growing Mandevilla or Dipladenia in a pot or container, be sure not to overdo the size.

A Mandevilla vine should have enough room for the roots to spread a bit, but if given too much room, they will put all their energy into producing roots, and you won’t get good flower production.

If you notice your plant becoming root-bound in its current container, give it more room on the sides when you repot. Giving it a deeper pot can interfere with blossom production.

Giving it a deeper pot can interfere with blossom production.

Typically, with Mandevilla plant care you repot the plant every year or two in the springtime. When repotting, be sure to massage the roots to stimulate growth. Give your plant a pruning to remove dead, dried or ailing leaves and stems.

Don’t worry about hurting the plant when pruning. These vigorous growers spring back enthusiastically from dramatic pruning to produce bundles of showy flowers on new growth.

Gardening Tips & Tricks : Growing Mandevilla Flowers

Mandevilla Care Requires Rich, Well-Drained Soil

One of the most important aspects of Mandevilla care lies in providing the right substrate or potting mix. These vines need loose, well-drained soil and the right balance of nutrition.

A good compost-based potting mix or soil for container plants can make a good base, but you should mix it with some very fine gravel or sand for lightness and good aeration. A combination of builder’s sand,

A combination of builder’s sand, coco coir or peat moss and good quality potting mix in equal parts is ideal.

Remember to line the bottom of the pot or container with coarse gravel, broken pot shards and/or Styrofoam packing peanuts to provide better drainage.

Use The Right Fertilizer At The Right Time

When purchasing a Mandevilla plant at a nursery or garden center, the plant will probably already have ample slow-release fertilizer incorporated into the soil to last a couple of months.

Don’t add more fertilizer to a newly purchased plant. It is unnecessary and may end up burning the roots.

When you’ve had your Mandevilla vine for a while, you’ll want to fertilize it cautiously using a slow-release fertilizer or a diluted water-soluble fertilizer solution. Alternately, top dressing with a good organic compost may provide for the needs of your plant.

Alternately, top dressing with a good organic compost may provide for the needs of your plant.

Understand that the mandevilla fertilizer needs of houseplants differ from those of ones growing outdoors. Likewise, the fertilizer needs of growing, flower producing vines differ significantly from plants being held in dormancy. Here are a few guidelines to follow.

Fertilizer For Spring/Summer Growing Flowering Plants

For growing, flowering plants in the spring and summer use a well-balanced, water-soluble fertilizer that delivers a healthy dose of phosphorous (e.g. 10-20-10). This will help your plant maintain the energy it needs for vibrant growth.

This will help your Mandevilla vine maintain the energy it needs for vibrant growth.

Observe your plants carefully. If they do not respond with the desired results, adjust accordingly. During times of heavy growth and flowering, you may need to apply a liquid fertilizer once every week or two. As the growing season winds down, you should stop fertilizing to help prepare your plant for the winter months.

In late August, give your Mandevilla vine a light feeding with a high phosphorus (e.g. 10-56-14) water-soluble fertilizer to fortify it for the coming winter months. This will be its last meal before spring.

Mandevilla Vines Pests and Diseases

A part of good Mandevilla care means you are always on the lookout for pests and problems on your rocktrumpet and all of your plants.

This is especially true when preparing to bring your Mandevilla plant indoors for the winter.

This preparation time provides the perfect opportunity to treat effectively for the most common Mandevilla pests:

  • Aphids
  • Scale insects
  • Mealybugs
  • Red spider mites
  • Whiteflies

Common Mandevilla and Dipladenia Pests

Aphids typically attack plants weakened due to inadequate care or poor location.

If you find these tiny little bugs on your Mandevilla, try to getting rid of aphids with a strong spray of water. Follow this up with treatment using insecticidal soap or neem oil.

Take steps to remedy any problems in plant care or location to prevent reinfestation.

Mealybugs collecting under leaves and scale insects on Mandevilla usually show up on thirsty plants. Lack of proper watering in summertime or low humidity indoors in wintertime can attract them.

Correct problems with your watering and humidifying routines and treat with a neem oil insecticide spray.

If you see webbing on the backs of the leaves, check for an infestation of spider mites. These insects turn up when conditions are too hot for the health of the plant.

Treat with neem oil and relocate your plant to a cooler, more sheltered location.

Frequent examination of your plants will help keep these pest problems under control.

Be sure to look your plants over thoroughly every few days.

Perform a particularly thorough inspection before overwintering Mandevilla.

More on Mandevilla Winter Care

Be sure to check the undersides of leaves and examine stems and leaf axils for any sign of unwanted insects, larvae, and eggs.

Prune off diseased or infested portions of the plant. Use a strong spray of water to knock the pests off and then follow up with appropriate treatment.

It’s always best to use the gentlest and most natural effective solution possible. This is why we recommend neem oil, an entirely natural oil very effective against:

  • Battling powdery mildew outbreaks
  • Plant Scale
  • Colonies of Mealybugs
  • Aphids
  • Thrips
  • Spider Mites

This safe, natural product is a must-have for any flower and/or veggie gardener. Buy Neem at Amazon.

In addition to insect pests, Mandevilla plants may be subject to problems such as fungus and/or yellowing, dropping leaves.

The fungus is a sign of excessive watering. It may also be a sign of inadequate ventilation.

Adjust your watering schedule and take great care not to water-log the plants.

Prune the plant to help air circulate through its leaves.

Some yellowed and dropped leaves are a natural part of the growth and life cycle of the plant.

Don’t be alarmed by this unless your plant is losing a significant amount of foliage. If this is the case, your plant may be too cold.

Move it to a warmer, more sheltered setting and/or turn up the thermostat.

Does Deer Eat The Mandevilla Plant?

We’ve been asked this question: “Is Mandevilla deer resistant?”

In our research, we have found several references on the websites “stating” that Mandevilla vine is deer resistant.

However, the Mandevilla is not listed as a deer-resistant plant or vine in the Rutgers University New Jersey Agricultural Experiment Station deer resistant database.

With the many Mandevilla colors, species, along with the many new hybrids, there probably are some varieties that are deer resistant and some which are not.

At this time we cannot offer an authoritative source to answer the question if the Mandevilla plant is deer resistant or not.

Profile Of The Mandevilla Plant

The Mandevilla plant is a member of the dogbane family. All parts of this plant are toxic, so take special care to keep pets and kids away. This evergreen plant tends to vine, but it may also grow as a bushy heap or trail along the ground if it doesn’t have a

All parts of this plant are toxic, so take special care to keep pets and kids away. This evergreen plant tends to vine, but it may also grow as a bushy heap or trail along the ground if it doesn’t have a

This evergreen plant tends to vine, but you may also grow Mandevilla bushes in a heap or trail along the ground if it doesn’t have a trellis like this or other structure to climb.

The plant hails from South America and Central America and is not cold hardy in the United States, but it does exceptionally well during the warm months. It is fast growing flowering vines, vigorous and can attain a significant amount of growth and produce a lot of flowers in a few short months.

It is fast growing, vigorous and can attain a significant amount of growth and produce a lot of flowers in a few short months.

This decorative plant produces shiny, deep green, oval leaves and large, trumpet-shaped flowers continuously and in abundance from May through October in most parts of the US, when well-cared-for.

The plant’s botanical names are Mandevilla sanderi and Dipladenia sanderi both of the genus, Mandevilla. There

There are over 120 member of this genus all producing gorgeous flowers in an array of shades of white, pink and mandevilla red.

It should be noted there are some vines which produce yellow flowers and are called yellow Mandevilla, but these are actually Urichetes or Pentilinon luteum.

As potted plants or container plants, Mandevilla and Dipladenia make an excellent addition to the home, balcony, deck or patio.

Planting directly in the ground (except in the south) is not recommended in the US. The Mandevilla plant are not at all cold hardy and cannot tolerate temperatures lower than about 45 degrees Fahrenheit for an extended period.

If planted in the landscape, they can be dug up, pruned and over-wintered indoors, or cuttings can be taken to propagate young Mandevilla plants during the winter months to take the place of the parent plants in the spring.

The Many Species and Mandevilla Varieties

Although there are well over 120 species of this attractive plant, only a few are under cultivation. Here are some of the popular varieties you may encounter.

Mandevilla Alice du Pont

Grow in a container or in the landscape. If allowed to grow freely in the landscape, it can reach a height of twenty feet. If kept in a container, it can be pinched and pruned back to control its size.

It is so adaptable that it can be kept in very small pots, hanging baskets or larger containers with no ill effects on its blooming abilities. This plant features large (3-8 inch) glossy, dark green, oval leaves and impressive clusters of large (2-4 inch) trumpet-shaped pink flowers.

Mandevilla Splendens

This plant produces lovely pink flowers, but differ a bit from those of Alice du Pont. Splendens’ flowers are pale pink with a deep pink center. As the blossoms mature, they become a deep rose color. The vining tendrils can reach a length of fifteen feet, but this plant is often successfully pruned into a shrub shape.

Mandevilla sanderi

One of the best-known and most popular is Mandevilla sanderi. This plant features very dense foliage and may sport flowers of white, pink or red. The flowers are arranged in impressive bunches and are two or three inches across. The plant can grow to a height of 2-7 feet.

Mandevilla boliviensis

Boliviensis produces an especially abundant number of very large white flowers with dazzling yellow centers. Leaves are large, smooth, sturdy and shiny. The tendrils of this semi-evergreen plant can stretch to a length of about seven feet.

Mandevilla x amabilis

One of the largest species is Mandevilla x amabilis, which is a hybrid and can attain a height of ten feet. The plant produces strongly textured, dark green leaf and pretty, pale pink flowers that are lightly scented.

Mandevilla Laxa

Also known as Chilean jasmine, Mandevilla Laxa (Mandevilla suaveolens) is not from Chile, but Argentina. This giant can grow to a height of 20 feet and produces large, richly fragrant flowers in shades of white ranging from snowy to a deep cream color.

Some say the flowers smell like gardenia flowers. Its long leaves are elliptical with a heart-shaped base.

This plant needs exceptionally rich soil, and it is an exception among Mandevillas because the roots can be cold hardy to approximately 5 degrees Fahrenheit.

Just chop it back all the way to the ground in late autumn and insulate it with a pile of leaves. It will cheerily return in the springtime.

You may also like: Clematis vine, beautiful flowers, a perfect trellis plant

Mandevilla Plants Interesting Introductions

  • White Delight has soft stems and pretty, bright white flowers. Its vines attain a length of 12 feet, but this plant is very accommodating when pruned to a smaller size and shape.
  • Stars and Stripes boast red blooms with white stripes. Its leaves are large and glossy, and its vines can attain a length of 12 feet.
  • Summer Snow’s flowers are very large and a dazzling white offset by glossy, dark green leaves.
  • Red Riding Hood produces impressive deep red flowers.
  • Ruby Star’s flowers are an exceptionally deep red shade.

Yellow Delight (Pentalinon luteum) is not a true Mandevilla, but it is a good imposter. It’s a low-growing shrub with jaunty yellow flowers that do very well as a hanging basket plant.

Bright red Mandevilla “Ruby Star’s” flower up close growing on arches in Palm Coast, Florida June 2018 – image iPhone 5 plantcaretoday.com

Creative Ways To Plant Mandevilla And Dipladenia

Both Mandevilla and Dipladenia are gorgeous planted together, as solo plants or as the central focus of a large container garden.

Placed centrally in a large pot with an obelisk or trellis to climb, Mandevilla makes the perfect contrast for a wide variety of foliage plants such as coleus, oregano, petunias or even the elephant ear plant, which is another good plant for the patio.

How to plant a Mandevilla vine in a patio planter to enjoy all summer.

  • Add a dazzling splash of color to your landscape with Mandevilla vines trailing over your arbor, pergola or trellis flowers.
  • Add these cheery, vigorous plants to your entryway, patio or deck in attractive containers.
  • Dress up your mailbox with an attractive garden of Dipladenia and Mandevilla and really make your home’s curb appeal pop.

How to Plant Around a Mailbox

  • Use cuttings from your own plants to add lush, luxuriant hanging baskets overflowing with vast billows of fragrant flowers and glossy foliage.

In terms of performance in the landscape, Dipladenia and Mandevilla can’t be beat. Larger varieties of Mandevilla can grow as much as twenty feet in a single growing season. You can count on having your trellis or arbor luxuriously covered in the blink of an eye.

Have you ever asked – Is The Mandevilla plant poisonous?

Propagating Mandevilla And Dipladenia Is Easy

There are three ways to propagate these vigorous plants:

#1 – Purchase And Plant Seeds Or Gather Your Own Seeds

If you purchase Mandevilla seeds, they are most likely hybrids. For this reason, if you collect your own seeds from the parent plants, the offspring may be quite different from the parents; however, this is not always a bad thing.

No matter how you get your seeds, early spring is the best time to sow them indoors. Use small pots and moist seed starting mix and cover the seeds lightly.

Place the seed pots in a bright, sunny place (or under a plant grow-lamp) and lay a sheet of plastic wrap over them. Keep them at a steady temperature of around 77 degrees Fahrenheit. Your seeds should sprout within a week-to-ten days.

Care for them as you would any seedling indoors through the early spring and you should have some jaunty young plants by late May or early June. Harden them off gradually and transition them to outdoors.

It’s easy to buy Mandevilla seeds online like these from Amazon – 100 Rainbow Mandevilla Seeds and Beautiful Flower Seeds

#2 – Take Cuttings From Mature Mandevilla Plants And Root Them

When pruning plants back before winter, select some likely cuttings for rooting. Good candidates should be 3-5 inches long with a couple of leaf nodes on the stem.

To root, remove the lower leaves from the stem and dust the stem with rooting powder. Next, poke the end of the stem into a good, light, well-draining soil (as described above).

Moisten the soil lightly and drape plastic wrap over plantlet or place the pot with cutting inside a clear plastic bag to act as a greenhouse.

Place your cuttings in a warm (77 degrees Fahrenheit) place with bright, indirect light. Be sure to lift the plastic or open the bag for a little while every day to provide good ventilation and prevent mold growth.

#3 – Layer Tendrils From Growing Plants Into Pots And Planters For Rooting

This is a very natural and carefree way to propagate Mandevilla. To do this, simply set a pot full of properly prepared potting soil next to a mature plant during the growing season.

Guide a tendril of the parent plant to make contact with the surface of the potting soil in such a way that a leaf node touches the soil.

Press the tendril into place and cover the leaf node area with soil. Leave the tip of the tendril exposed to the air. Anchor the tendril in place with a bent piece of wire or a stone.

Take care of this setup just as you would a potted plant. Keep the potting soil evenly moist. Within a week you should see roots forming at the leaf node.

Let the new plant establish itself for a couple of weeks. Once it has set down good, strong roots simply cut its “umbilical cord” and separate it from the parent plant. You should have a sturdy, vigorous new potted plant ready to enjoy.

Mandevilla Adds Color And Opulence To Your Home And Garden

Mandevilla and Dipladenia are easy to grow and provide a dramatic and satisfying showing of gorgeous flowers throughout your growing season.

These enthusiastic, cheery plants like lots of light and warmth, nourishing, well-drained soil and simple, consistent care and watering.

Whether you grow them outdoors as an annual or enjoy the many gardening challenges and activities they provide you year-round as houseplants or mandevilla propagation projects, you are sure to enjoy these exotic, luxuriant tropical plants.

Family: Apocynaceae

sources: 1 | 2 | 3

Mandevilla

Known for its showy flowers, the genus Mandevilla includes plants that were formerly called Dipladenia. There are about 100 species of this tropical American woody vine. Most species overwinter only in the tropical South. In South Carolina they can be treated as annuals or grown indoors. They can be brought indoors before the first freeze and treated as a houseplant during the winter months. In the spring, mandevilla can be returned outside after the last spring freeze or after the threat of freezing weather has passed. Mandevilla is great trellised in containers or in hanging baskets.

Quantities of fragrant flowers compensate for sparse foliage and for the care mandevillas require. The flowers are produced in early summer and again in early fall, even when plants are very young.

How to Grow Mandevilla

Indoors, mandevillas need curtain-filtered or bright indirect sunlight. Provide night temperatures of 60 to 65 °F and day temperatures above 70 °F. Plant in a mixture of equal parts peat moss, potting mix and builder’s sand. In spring and summer, feed every two weeks with a fertilizer high in phosphorus such as 10-20-10.

Outdoors, grow mandevillas in partial shade. They need rich, well-drained, sandy soil with humus added. Provide a frame, trellis or stake for support. Pinch young plants to induce bushiness.

Since 45 to 50 °F is the minimum temperature that can be tolerated by mandevilla, plants should be moved indoors for the winter. Before bringing them indoors, examine them carefully for pests. Look under the leaves, in the leaf axils, and in every conceivable nook and cranny for insects and their eggs. Remove any diseased or dead leaves by hand. Insect-infested plants can be doused with a forceful spray of water to dislodge the pests, or you can use insecticidal soaps or other appropriate insecticides labeled for use on your plant. You may have to prune some of the plant to compensate for any root loss.

Move the plants to a lighted location where the temperature is above 45 to 50 °F. Reduce the frequency of watering to coincide with the plants’ rest periods induced by the cooler temperatures and reduced light.

In late winter or early spring before growth begins, prune by removing old, crowded stems and shortening others. Even if mandevilla is pruned almost to the ground, it will bloom the same summer on the new shoots, which develop from the base of the plants.

Species

Mandevilla ‘Alice du Pont’ is a woody, twining evergreen vine. It grows to a height of 20 feet but is much shorter when grown in a container. The leaves are dark green, glossy, oval and 3 to 8 inches long. Clusters of pure pink, flared, trumpet-shaped, 2- to 4- inch flowers appear among the leaves, spring through fall. Even very small plants in 4-inch pots will bloom. This cultivar grows well in hanging baskets. Pinch off tips of new stems to induce dense growth.

Mandevilla ‘Laxa’ or Chilean jasmine (although it is native to Argentina) is a climbing, woody, deciduous vine. It grows to 15 feet. Leaves are opposite, oblong or heart-shaped at the base. They are 2 to 6 inches long, thin and dark green with gray-green undersides. Clustered summer flowers are white, 2 inches across and trumpet-shaped with a powerful gardenia-like fragrance. Provide rich soil. If the plant becomes badly tangled, cut it to the ground in winter. It will bloom on the new growth. Roots are hardy to about 5 °F.

Mandevilla ‘Splendens’ is an evergreen similar to ‘Alice du Pont’, with the same bloom period. The leaves are narrow, pointed and 3 to 8 inches long. The trumpet-shaped flowers are 2 to 4 inches across, pale pink when they open, with rose-pink eyes. As the flowers age, their color deepens to rose. The stems of M. ‘Splendens’ reach 10 to 15 feet in length.

Cultivars

  • ‘Red Riding Hood’ has deep red flowers.
  • ‘Summer Snow’ has sparkling white 3- to 4- inch flowers against dark glossy foliage.
  • ‘Yellow’ has wide, bright yellow flowers. They are lower growing and shrubbier than the species and superb in hanging baskets.

Problems

The most common pests are mealybugs, scales, whiteflies and red spider mites.

The Mandevilla Vine is a versatile plant that can be kept as a houseplant but is more commonly seen climbing up pergolas, along trellises or fences, or flowing out of hanging baskets. While the foliage is attractive, the main event is the large abundance of vibrant, trumpet-shaped flowers that bloom from spring right through to fall. If kept inside year-round, the plant can do well on bright windowsills or in sunrooms, though it rarely flowers in these conditions.

Mandevilla Vine Overview

Quick Facts

Origin South America
Scientific Name Mandevilla Vine
Family Apocynaceae
Type Evergreen or deciduous climber
Common Names Rocktrumpet
Ideal Temperature 60-80° F
Toxicity Toxic to people and pets
Light Bright, indirect light

Watering Moist soil, not too wet
Humidity High humidity
Pests Mealy bugs, scale, red spider mites, aphids, whiteflies

Caring for Your Mandevilla Vine

Soil

Whether you choose to house your Mandevilla Vine in a container pot or a hanging basket, the soil you use needs to be carefully considered. Choosing the correct soil for your vine will be one of the most important aspects of caring for your plant. The ideal soil will result in a healthy vine that looks lush and full. Mandevilla Vines like to be in loose, well-draining soil. Select a good potting soil that is compost-based, or a peat moss, and add sand to help improve aeration. You could use two parts potting soil or peat moss to one part builders’ sand, or, alternatively, use all three mediums in equal measure.

Watering

This plant performs best when its soil is continuously moist but not wet. Give it a good drenching and then, wait until the soil is almost dry to the touch before watering again. During the growing season, a heavy watering once a week will probably be about right, but this should be adjusted depending on light, temperature, plant size, and variety, so do check on the condition of your plant’s soil before adding more water too it.

The Mandevilla Vine is susceptible to root rot, so be cautious when watering to avoid this problem. This is also where the well-draining soil comes into play, helping the water flow through to the bottom of the container and out of the escape holes, so the roots aren’t sitting in standing water.

When watering your vine, you should shower the foliage as well as the soil. This helps to remove any pests that might have made a home on your plant but also gives the plant an opportunity to absorb moisture through the leaves. When doing this, be sure to use a light shower or drizzle function on your hose, as a strong force of water could harm the flowers.

Light

Mandevilla plants like a good balance of bright, indirect light and shade

Mandevilla plants like a good balance of bright, indirect light and shade. Too much direct sunlight will cause the plant to become scorched, while too much shade will stunt plant growth and inhibit flowers from blooming, so choose the positioning of your plant with this in mind.

The ideal outside spot for your Mandevilla Vine is a location that gets morning sun but is shaded and, thereby, protected from the strong sun in the afternoon. This balance will allow your plant to thrive.

Temperature

This plant enjoys warmth, with temperatures ideally between 60-80° F. If outside temperatures drop any lower than 50° F, then it is time to find a home for your plant indoors. The Mandevilla Vine cannot survive overnight temperatures of 40° F, so be sure you don’t leave it too late and lose your plant. Once inside, normal home temperatures will be fine for the plant. It can return to life outside once temperatures are consistently reaching a minimum of 50° F.

Humidity

The Mandevilla Vine likes moderate to high humidity. When kept inside as a houseplant, it will benefit from a light water misting spray, or the use of an electric humidifier to prevent it from drying out. This plant is also able to absorb moisture through its leaves. If air becomes too dry inside, then the plant can dry out, so be sure to put steps in place to prevent this from happening.

Feeding

Your Mandevilla Vine will need to be fed fertilizer during its growing period to ensure the development of an abundance of flowers. After bringing your plant home from the garden nursery, it usually won’t require to be fed for around three months, as the soil will likely already contain a slow release fertilizer. Refrain from adding any more fertilizer to the vine as this can result in fertilizer burn. Once you have had the plant for three months, you can begin to feed the plant, or some growers simply add an organic-based topsoil to the container, which will provide enough essential nutrients.

During times of heavy growth and flowering, you may need to feed the plant on a weekly or bi-weekly basis (New York Botanical Garden). Use a water-soluble fertilizer or slow-release fertilizer and monitor the plant for its reaction. If any undesirable effects occur, then you can adjust your feeding schedule accordingly, or try a different type of fertilizer.

At the end of summer, your plant will benefit from a final feed which is high in phosphorus. This feed will see the vine through winter as it should not be fed again until spring.

Repotting

The Mandevilla Vine must be potted in a portable container, such as a pot of hanging basket, and not directly into the ground. This is because the plant does not fare well outside over winter and will need to be transported inside to be kept alive. Ordinarily, you will need to repot your vine as soon as you bring it home from where you have purchased it. Be careful when selecting a container for your vine, choosing one with a little extra space around the edges than the current pot it’s in. Using a container that gives the roots too much room to grow means the plant will put all of its efforts into growing roots instead of producing flowers, resulting in poor flower growth. However, you still want to allow the roots a little space to spread, so don’t be too conservative when selecting a pot.

Mandevilla Vines will need to be repotted every year or two, and it’s best to do this in the spring. As fast growers, the roots can become pot-bound quite rapidly. When you notice this happening, repot the vine by selecting a new pot that is just an inch or so larger in diameter than the current pot. Pad the edges with fresh soil and transport the plant from its current pot to the new pot, rubbing the roots gently between your fingers to encourage them to spread in their new home. Try not to use a pot with more depth, as this can negatively impact flower production. Repotting is also a good opportunity to remove any dead flowers or foliage from your plant. This will ensure that the plant’s energy is directed correctly instead of to areas of the plant which are damaged.

Pruning

This plant grows rapidly and, therefore, will need pruning if you want to control its growth. If the plant begins to look messy or is crowding your other plants, you can prune it back as much as you like until it is the size you want it to be. Don’t be scared to over prune, as the Mandevilla Vine responds well to aggressive pruning and will follow up pruning with vigorous growth and new blossoming flowers. When pruning, always wear protective gloves as the milky sap contained in the leaves and stems can cause skin irritation.

If you are happy with the spread of your Mandevilla Vine during its time outside, then there is no need to prune it.

If you plan to bring the plant inside over winter, it will almost certainly need to be aggressively pruned in order to easily transport it into your home, and also to fit it into the required space. Cut it back as small as you need to. If you have a very large vine and need to prune the majority of it off, then this can seem quite a daunting task.

However, even if you cut it back to just a few inches from the soil, it will still return to its former size from new rapid growth when next spring comes around, giving you yet again a beautiful and vibrant plant to enjoy throughout the growing season. Try not to be too cautious with your pruning; it won’t harm the plant in any way, and it’s important that the vine is a size which you are able to live with in your home throughout the winter.

If you want to feature your vine as a houseplant over winter (as opposed to putting it in a rarely used room to rest), you will want to leave some of the foliage and flowers intact to ensure it is visually attractive. Very little growth will occur once you bring the plant inside.

Overwintering

Bring your Mandevilla Vine inside once temperatures outside drop to below 50° F. Be sure to check the plant thoroughly for pests before bringing it inside, as these can spread to other houseplants. Common pests on the Mandevilla Vine include mealybugs, aphids, scale, whiteflies, and spider mites. Check under the leaves, as well as on top, on flowers, and stems.

Some people like to have the vine as a houseplant during winter, in which case, ensure it gets bright but indirect light, is kept at usual home temperatures of between 60-80° F, and keep the plant away from cold drafts or excessively dry air. The plant will grow very slowly during this time, and the aim is simply to maintain it rather than developing it, so don’t use any fertilizer once the vine has been moved inside, and dramatically reduce how frequently and how heavily you water it. The Mandevilla Vine can return outside and resume normal care when spring arrives.

Alternatively, you can bring the vine inside to a basement or garage over winter. This will involve putting the plant into a protective environment, which will allow it to become dormant. To do this, prune the plant back to around a foot in height and move the plant into your chosen place once the temperature outside is quite cool. You will need to ensure that your garage or basement temperature stays above 50° F during winter; otherwise, the plant will die. At this point, some people choose to cover their Mandevilla Vine with a plastic bag, though it’s also acceptable to leave the plant uncovered.

Whichever method you choose, you’ll need to ensure the plant is in total darkness during its time inside. The removal of sunlight from the vines life will make it go dormant. You can leave your plant in this state for the duration of winter, checking on it occasionally to see if the soil is dry. If it is, you can water it just a little amount to keep it alive. This process allows the plant to rest completely. In February or March, assess the plant’s condition for disease and damage, removing any parts of the vine that have died. At this point, you can repot the plant if necessary, and resume feeding and watering the plant (Royal Horticultural Society).

Following this, the plant should bounce back to life and perk up considerably. When spring comes around, you will need to gradually re-introduce the plant to light and heat. Put it outside on bright and warm days in April or May, remembering to bring it back inside overnight when temperatures drop. During this time, the plant will gradually acclimatize to life outside. Any winter growth may die during this transition, but this is not a cause for concern and is entirely normal. It will resume its usual rapid growth pattern once it properly settles back into its home outdoors As soon as the weather becomes more consistently warm, with a minimum temperature of 50° F, the plant can return to its position outside on a more permanent basis.

Common Problems

Yellowing Leaves

Foliage that is turning yellow is most commonly a result of lack of nutrients, but this could be down to several possible factors. Most commonly, overwatering is to blame for this problem. Too much water will saturate the roots of the Mandevilla Vine and prevent them from being able to absorb water or nutrients. Poor drainage is a very similar problem. If the soil cannot effectively drain, then the roots will be sitting in wet soil and become saturated, leading to an inability to absorb water and nutrients. These issues will eventually lead to root rot, which will kill the plant, so yellow leaves should be addressed early to give your plant a greater chance of survival.

Too little water can also cause yellowing leaves because the water is the vehicle that carries the nutrients to the plant via the roots. If the plant is not getting enough water, then the plant will not be absorbing any food or drink.

Nutrient-deficiency can also be caused by a lack of, or improper use of, fertilizer. You can figure out which nutrients are lacking from your plant by noting the process by which the foliage turns yellow. If younger leaves turn yellow first, this points to the plant being deficient in iron. If the older leaves are affected first, then this is more likely a lack of zinc, nitrogen, or manganese. By determining which nutrient is missing from your Mandevilla Vine, you can select a more appropriate fertilizer to deal with this.

Brown-Spotted Leaves

Brown spots on the leaves of your plant are ordinarily the result of disease or pests. You can check your plant for pests by inspecting it closely, looking for the bugs themselves, as well as other clues, such as holes in the foliage, webbing, or residue that pests have left behind and develops fungus. Pests can also turn the leaves of your plant yellow as the feed on the sap, depriving the plant of nutrients.

In the case of pests though, yellowing leaves will be accompanied by other symptoms. If you identify pests on your plant, first try to remove them with a strong blast of water from a hose. Repeating this daily for a week is usually enough to rid the plant of a minor infestation. If the pest problem is more severe, try using neem oil.

You can buy neem-based sprays, which are organic and not harmful to the environment or beneficial to insects. Alternatively, you can make your own for a more natural solution. Buy pure organic cold-pressed neem oil; it is fairly inexpensive and can be easily bought online. Neem oil should be diluted before spraying on any plants, but it is not water-soluble. To make your spray, first mix one quart of water with a squirt of mild dish soap (around half a teaspoon); this will allow the neem oil to mix with the water. Add one teaspoon of neem oil and mix. Use the spray liberally on your Mandevilla Vine every day for a week. This should rid your plant of any pest problem, so the use of pesticides is rarely required.

Winterizing Mandevillas: Tips For Overwintering A Mandevilla Vine

Mandevilla is a showy vine with big, shiny leaves and eye-catching blooms available in shades of crimson, pink, yellow, purple, cream and white. This graceful, twining vine can grow up to 10 feet in a single season.

Mandevilla plants in winter survive the season in fine shape if you live in a tropical climate that falls within the temperature ranges of USDA plant hardiness zones 9 and above. However, if you live in a more northern climate, planting the vine in a container is the best way to go. This tropical plant won’t tolerate temperatures below 45 to 50 degrees F. (7-10 C.) and must be wintered indoors.

How to Overwinter Mandevilla as a Houseplant

Bring a potted mandevilla plant indoors before the mercury drops below 60 degrees F. (15 C.) and grow it as a houseplant until temperatures rise in spring. Trim the plant to a manageable size and put it where it gets plenty of bright sunlight. Room temperatures are fine.

Water the plant every week and trim as needed to maintain the desired size and shape. Don’t expect blooms; the plant isn’t likely to bloom during the winter.

Winterizing Mandevillas

If you’re short on bright light or space, you can bring the mandevilla indoors and store it in a dormant state. Put the plant in the sink and drench the soil thoroughly to wash out pests that may be lurking in the potting mix, then cut it back to about 10 inches. If you don’t want to trim it back, you may notice yellowing with subsequent leaf drop – this is normal.

Place the plant in a sunny room where temperatures are between 55 and 60 degrees F. (12-15 C.). Water sparingly throughout the winter, providing only enough moisture to keep the potting mix from becoming bone dry. When you see early spring growth indicating the plant is breaking dormancy, move the mandevilla to a warm, sunny room and resume normal watering and fertilization.

Either way you decide to winter your mandevilla, don’t move it back outdoors until temperatures are consistently above 60 degrees F. (15 C.). This is also a good time to move the plant to a slightly larger pot with fresh potting mix.

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