- how much water do plants need
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- Notable Examples
- Know Your Meme Store
- External References
- 7 Signs You’re Drinking Too Much Water
- Seedling Stage
- What are seedlings?
- How to protect seedlings
- How much water do they need
- What kind of nutrients
- The ideal temperature
- How much light
- Avoid stretching
- How much should I water my plant?
- Ten watering rules of thumb
- 1. Start
- 2. Rootzone
- 3. Keep all drains open
- 4. Determining root health
- 5. Water cycle
- 6. Weighing
- 7. Humidity
- 8. Keep roots in the dark
- 9. Never too much water
- 10. Preferably don’t water at night
how much water do plants need
I water until water comes out and do it again when the PLANT looks a little thirsty not the soil. Generally in a one gallon pot for a one foot plant I water up to .5 gallon a week.
Once I transplant into bigger pots and they go off plants can easily go through two gallons a week at about 3 feet. The bushier and bigger the plant is the more water in needs.
Pay attention to how much water you need to completely saturate the medium and water when thirsty for soil like mediums. I think people worry way to much about how much or little they should be watering the plant.
Really it is very simple and by the end of your first grow you should be able to tell whether a plant is thirsty by looking at it. Even before they wilt at all there are telltale signs of water stress about to happen so you can get better and better at watering.
I recommend watering once and pay attention to how much you had to water til run off forms. I usually water each plant a little watering each plant multiple times in a few minutes so the water doesn’t drain down the side of the pot. Soon you will notice water gently collecting at the bottom and have a general ammount of gallons per plants you needed to water. After this don’t do anything but watch the plants, they should go through a little spurt of vigorous vegetation followed by their leaves relaxing to a horizontal position. After I generally notice the plants leaves saw edges start to raise causeing a slight ving of the leaf which is generally when I water again.
Sometimes sawedges curl up from salt build up in my experience as well but with careful observation you will get it down no problem.
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“Too Much Water” is a quote from the IGN review of Pokemon Omega Ruby and Sapphire cited as one of the drawbacks of the gameplay experience.
On November 18th, 2014, IGN published its review of Pokemon Omega Ruby and Alpha Sapphire for Nintendo 3DS by IGN, which praised the title’s gorgeous CG details and post-game easter eggs, while listing the overabundance of HMs (hidden machines) and water as its cons. The game received a rating of 7.8 out of 10. Given the geographical setting of Omega Ruby and Sapphire in Hoenn, a fictional region consisting of many islands and waterways, the review’s commentary on there being “too much water” instantly became a point of contention among the IGN members and fans of the game at large.
Within 24 hours of the publication, the article was met with more than 5,800 comments, the majority of which raised issues with the “too much water” remark. The article was subsequently linked to a variety of Pokemon gaming communities and video game forums, including three separate posts on Reddit’s /r/3DS and /r/Pokemon, as well as GameFAQs, Bungie and 4chan’s /vp/ (Pokemon) forums. The IGN review also prompted dozens of satirical posts on YouTube and Tumblr.
Know Your Meme Store
IGN – POKÉMON ALPHA SAPPHIRE AND OMEGA RUBY REVIEW
Reddit – IGN Review of Pokemon – Too much water
Reddit – TOO MUCH WATER!!!
Reddit – In light of the new ORAS reviews and leaks, let’s keep some perspective
GameFAQs – LMAO IGN gives it a 7.8 ‘too much water’
IGN – LMAO, IGN gave Pokemon ORAS a 7.8 because of ‘Too much water’
Tumblr – Search Results for ‘Too Much Water’
Cheezburger- According to IGN, ORAS is Bad Because of TOO MUCH WATER
Bungie – “”Too Much Water” -IGN”:https://www.bungie.net/en/Forum/Post/79404080/0/0
4chan – /vp/ – Pokémon / ‘too much water’
January 1, 2020
- Pokémon Masters’ Legendary Event The Beast That Devours The Sun, featuring Solgaleo, is released along with a new Scout Spotlight, featuring Cynthia for the first time.
- Pokémon GO’s new Research Breakthrough reward features Lapras that will know Ice Shard or Ice Beam and runs till February 1, 2020.
January 4, 2020
- Episode The Wisdom Not to Run! is released in the US.
January 8, 2020
- A new EX Challenge has been added to Pokémon Masters featuring Hau as the opponent.
January 9, 2020
- A Pokémon Direct of about 20 minutes is planned at 14:30 UTC.
- Pokémon Mystery Dungeon Rescue Team DX is announced for the Switch and will be released on March 6, 2020 while a demo for the game is avaiable today.
- An expansion pass for Pokémon Sword and Shield is announced with the The Isle of Armor as part one releasing in June 2020 and The Crown Tundra as part two releasing in Fall 2020 with. Several new Pokémon and characters have been announced.
- Pokémon HOME will be released in February 2020.
January 10, 2020
- A new trailer has been released which announces the new Pokémon movie, Pokémon the Movie Coco.
January 11, 2020
- Episode Final Rivals! is released in the US.
January 12, 2020
- Episode Don’t Lose, Piplup! The Drift Ice Race in Sinnoh!! is released in Japan.
January 15, 2020
- Pokémon Masters’ new Scout Spotlight is released featuring Ethan and Cyndaquil that can evolve.
January 18, 2020
- Episode Enter the Champion! is released in the US.
January 19, 2020
- Episode The Promise We Made that Day! The Ho-Oh Legend of Johto!! is released in Japan.
January 22, 2020
- Pokémon Masters’ new Scout Spotlight is released featuring Leaf and Eevee.
January 25, 2020
- Episode Z-Move Showdown! is released in the US.
January 26, 2020
- Episode The Dragonite Paradise and the Dragonair Trial! is released in Japan.
January 28, 2020
- Pokémon GO Battle League starts to roll out, starting for trainers at level 40.
January 30, 2020
- Pokémon Masters’ Legendary Event The Dragon That Rules the Sky, featuring Zinnia and Rayquaza, is released along with a new Scout Spotlight, featuring Professor Kukui for the first time.
7 Signs You’re Drinking Too Much Water
Thirst is the best indicator that you need water, Statt explains. One study in the Proceedings of the National Academy of Sciences found that our swallow reflex diminishes once we’ve had enough to drink. So, lack of thirst could mean you’ve hydrated enough. That being said, the National Academies of Sciences, Engineering, and Medicine recommends women drink 2.7 liters of water each day and that men drink 3.7 liters each day.
Many of these signs don’t indicate over-hydration in of themselves, so also check your urine color and the frequency with which you’re going to the bathroom. If you’ve over-hydrated, Statt recommends avoiding water and instead having a sports drink, which can replenish your electrolytes. If you’re experiencing symptoms of hyponatremia, you’ll want to go to the doctor’s to get a saltwater injection and any other treatments necessary to restore your body’s electrolyte balance.
Morgan Statt, Health and Safety Investigator at ConsumerSafety.org
Dr. Sangeeta Mahajan, MD, urogynecologist at the University Hospital Case Medical Center
Keeping your marijuana happy and healthy comes down to how carefully you care for them through each stage of a marijuana plant’s life. This is especially important in the younger stages of your plant’s life when they are at their most fragile condition.
A marijuana seed that sprouts will split along the seam that joins the halves of its husk. Driven by gravity , the tail grows longer rapidly, screwing its way down into the soil until the root can supply sufficient leverage to raise the husk containing the two seed halves upright.
From that position, the two halves fold out to act as biological solar panels that gather energy and begin a marijuana plant’s first chlorophyll production even as the tiny taproot sprouts hairlike feeder roots that stretch outward to strengthen its grip in the soil.
In this article, we take a look at the ways to protect your seedlings through their most delicate stage of life.
What are seedlings?
The key thing to do during this stage is simply to pay attention and keep tabs on every development or change that occurs in your marijuana seeds. When they sprout, the seeds’ seams will split and allow a white tendril to poke through within several hours of this split. This tendril will grow very quickly, moving downward until it’s deep enough for it to hold up the rest of the plant (namely the stalk and the seed husk).
Sprouting cannabis seed
The husk, now split into two, emerges from the ground and functions as a sort of makeshift leaf – in other words, it absorbs energy that can be used to produce chlorophyll within the plant. While you see the stalk growing upwards, you can also be sure that more roots are sprouting and growing downwards at the same time.
Grab my free Grow Bible for more on marijuana seedlings here
The first two leaves, completely unique from any future leaves that will grow, pop out of the middle of the seed’s split. These leaves are called sucker leaves and mark the beginning of more leaf growth.
Two-lobed leaves will then grow from the middle of the sucker leaves. These two-lobed leaves usually resemble chicken feet, since they have three lobes. After the three-lobed leaves come two leaves with five lobes, and then two more with seven. Seven-lobed leaves are the ones everyone recognizes as the marijuana leaves.
Two lobed leaves growing from the middle of the sucker leaves
Two lobed leaves will then grow from the middle of the sucker leaves. These two-lobed leaves usually resemble chicken feet, since they have three lobes. After the three-lobed leaves come two leaves with five lobes, and then two more with seven. Seven-lobed leaves are the ones everyone recognizes as the marijuana leaves.
If you were able to keep your marijuana plants healthy throughout its entire sprouting stage, they would most likely go through a very productive vegetative stage. Protecting your young plants is about more than just survival: it’s about investment in your future harvest. Read the article How to germinate marijuana seeds for more about germinating tips.
If you’re looking for seeds, look no further: My seedbank has a selection the best, classic, medical and popular strains out there. Learn more
This article covers the various elements you will need to keep a constant eye on to ensure the well being of your seedlings. These elements are protection, water, nutrients, heat, and sunlight.
How to protect seedlings
You will need to protect your young plants from more than just discovery by the authorities. Even if you live in a location where growing marijuana is legal, you have plenty to worry about with protecting your seedlings.
You should keep your plants in some sort of protected area, such as a rooftop, and shelter it using some sort of a transparent, plastic dome or bubble. These domes can keep your seedlings from being eaten by insects, rodents, or other pests, and they are easy and cheap to make yourself.
Simply slice a clear plastic bottle in half, then recycle the top half and keep the bottom half. You should cut small slots around the edges of this half so that your young plant will have some airflow. Place the dome over your little plant, completely covering it. This will have the additional bonus of insulating your plant in case an unexpected frost occurs. In my free Grow Bible, you will find more DIY hacks for your grow.
In addition to insulation and protection, your seedlings will need the most important elements on Earth: water and sunlight. You have to constantly keep the soil and the seedling moist around the clock, and you need to make sure they are receiving plenty of sunlight.
If you live further north, you could have some more trouble with this since your spring days will be shorter than latitudes further south. One big problem that can happen to outdoor growers is their seedlings not receiving enough sunlight. When this happens, the plant stretches taller and taller in an attempt to reach more sunlight, and then it is too tall to hold itself up any longer.
If you have space and resources, you can try sprouting your cannabis seeds inside of a closet to begin with. Using the proper equipment in this environment can give your young plants plenty of sunlight, giving them enough energy to sprout large, healthy leaves right from the beginning.
Related guide: Growing marijuana safely
This type of growing would also ensure that their stems won’t get too long and weak; rather, they will be short and strong. You will be able to avoid the hassle of stabilizing tall, weak stems with sticks. If they don’t do this while the plant has leaned to the ground, it could begin to rot.
That being said, if you start to grow your seedlings indoors, transplanting them later will be necessary, which presents its own difficulties and safety concerns for your young plants. Ultimately, it depends on which option is best for you.
How much water do they need
One common problem that occurs when trying to care for a seedling is giving them too much water. It is actually less of an issue having to do with too much water, but actually has more to do with too little oxygen reaching your plant’s roots. This happens most commonly with seedlings being grown in containers since water can only go so far as the walls of the container.
Watering your seedlings
If your plants are being over watered, you will most likely see symptoms such as drooping leaves. There are plenty of ways to avoid this, however, as long as you keep reading for a better understanding. Your planting situation is the most important factor that comes into play when considering how you have managed to overwater your plants, and how you can fix or avoid the issue.
Your pot is too big for your seedling
Since a young plant’s tiny roots absorb much less water than their more mature counterparts. If you water as much as the container can hold, these tender roots will not be capable of taking it all in. This situation, occasionally referred to as “overpotting,” leads to over watering. So how do you prevent this situation from happening?
Use small pots while growing seedlings
The best thing to do is to begin your seedling’s life in a smaller container to begin with. Once they have grown a fair amount, you can move them to a bigger container. If it’s too late and you need to fix the issue, simply direct your watering to a specific area: a little circle right around your plant. Once the topmost inch of soil is dry again, you can do another round of watering. You can only begin watering normally.
If you plan well enough in advance, you can have a separate container for each of your marijuana plants’ stages of life. If your plants will be living in containers for the entire growing season, you will need to know in advance the size of your last container.
In other words, you will have to have a good idea of how large you would like your plants to become. Because roots grow more rapidly when they are left in one container for a long time, fewer transplants mean a larger size plant (and therefore container). Take that into account when planning your container sizes.
Your pot is too small for your seedling
You can plant seedlings in very small individual containers, such as a solo cup. You can’t keep them cooped up in a solo cup forever, though since their roots will quickly outgrow the small space. If your plants are left in a small container for too long, they will become “root bound.” This means that the roots have wrapped themselves around the outside of the cup, keeping water on the inside from escaping.
Transplant your plants when needed
Why is being root bound such a bad thing? It can lead to some pretty big problems, including overwatering, nutrient deficiencies, wilting, and more. You can avoid this problem simply by changing the size of their containers as frequently as necessary. (Use these containers)
If your plants’ container does not have an efficient drainage system (i.e. holes punched in the bottom of the container, plus the right kind of soil), overwatering will quickly become a problem that could be life-threatening to your plants.
One way to keep this from happening is to start growing your plants in a soil that drains well from the very beginning. Soils that are clay-based, for instance, retain water and, therefore, should be avoided.
You can also begin with a smaller container, which would help prevent the issue that was mentioned above. Make sure your container has lots of holes where water can drain from.
Don’t overwater your plants, make sure to have good drainage system
If you ever notice that water isn’t draining as fast as it should, you can add perlite to your soil to increase the oxygen content. Don’t water your plants quite as often until you notice them drinking more, or try using a Smart Pot instead of a normal pot.
If you follow these tips and are careful about watering your plants, you should be able to avoid overwatering them altogether.
If you’re sure you haven’t been watering your plants too often or too much and they are drooping or wilting, the culprit could actually be a lack of water. Sometimes people who know about the common occurrence of overwatering seedlings have overcompensated, therefore actually watering their plants less than is required.
The roots of your plants need to constantly be able to access water. Plants lose the water they have absorbed through their leaves in a process called transpiration. They do this by sucking up the water from the roots like a straw. If this process keeps going and the roots down below are not receiving enough water, the plant will undergo some serious problems.
Effect of underwatering your seedlings
If you are able to visibly notice your soil separating away from the container it’s in, you probably have an underwatering problem on your hands.
If your soil is enriched with nutrients and you underwater your plants, the effects will be even more devastating. Your plants will turn a dark green color and will have twisted new growths of a strange color. In this case, the only thing you can do is give your plants more water to re-establish their roots and begin growing once again. If they receive enough water to fight these effects, they will probably be able to combat this situation.
What kind of nutrients
Giving your plants nutrients can come with its own issues. If you give your plants too high a dosage of nutrients, for example, it will turn into nutrient toxicity. Your plant’s leaves will have tip burn and turn darker in color.
Nutrient toxicity can be caused by using a “hot” soil or a type of soil with a lot of nutrients. As long as you are watering your seedlings enough, they should be able to grow out of nutrient toxicity that comes from using hot soil.
Some soils are “slow-release,” such as Miracle-Gro. Avoid these soils at all costs, as they will not help your plant be healthier – in fact, it makes them even more susceptible to nutrient toxicity.
Nutrient toxicity seedlings
If you provide your seedlings with nutrients when they are too young, they might have a sort of nutrient overdose. As long as your initial potting mix is high quality, you shouldn’t need to worry about adding any more until after a minimum of a few weeks.
If you feed your plants with a large amount of nutrients all at once, you could end up with nutrient toxicity in less than a day. If you’re using a nutrient schedule that comes with the store-bought nutrients, half the amount it says and see how your plants react before adding any more.
I’ve had a personal line of fertilizer developed. My Seedling Fertilizers are perfect for your little ones.
If you use the wrong type of nutrients or bought a potting mix that isn’t right for cannabis seedlings, your plants could end up with a nutrient deficiency. You can identify this problem by yellowing, folding leaves starting to form on your plant. They will eventually wilt and drop off.
Theses leaves are located on the bottom of the plant, but if they are located only at the top, then nutrient deficiency probably isn’t a problem for that plant. Nutrient deficiencies always affect your older leaves first.
You can avoid any such problems by making sure that your plants have the right type of nutrients and by providing more nutrients as the plants “use up” their current soil. Additionally, if you’re growing your plants without soil, this doesn’t mean that you don’t need to provide nutrients.
Deficiency on your plant
Problems could also arise if the soil isn’t kept at a balanced pH level. Even if the right nutrients are present, with the wrong pH level, your plant could experience nutrient a deficiency. If you are watering your plants poorly, this could also have a nutrient-related effect on your plants.
Additionally, keeping your plants in a container that is too small for them for too long will cause nutrient deficiencies, simply because it will become root bound and will keep your roots from working properly.
For a list with all nutrient deficiencies check the article Nutrient deficiencies in marijuana plants.
The ideal temperature
The temperature should remain near 73 degrees, but if it’s too hot then simply move the lamp further away from the plant. If your seedlings are experiencing temperatures that are too high, their leaves will start to curl upwards and form a canoe shape.
temperature seedlingse for seedlings
You can solve this problem simply by lowering the heat. These symptoms occur more easily when your marijuana plants are also not receiving enough water.
How much light
If you’re germinating your seeds indoors it’s best to place your seedling in containers under fluorescent lights , since the lights do not use too much power and don’t emit much heat, allowing you to place them quite near the plants (2 to 4 inches).
Make sure to have the cfl on at intervals of 18 hours on, 6 hours off. If you’re using HPS grow light place them as close to the seedlings as possible but don’t let temperature exceed 77.
If you’re germinating outdoors it’s different. It is safe to say that sunlight is most important when your plants are first starting to sprout. Don’t be afraid of giving them too much light – it is almost never enough, as long as you keep your plants’ other needs in check (i.e. keeping their soil consistently moist).
Outdoor sunlight while growing your seedlings outside
It will be obvious when you aren’t giving your plants enough light since their stems will be somewhat white-colored, tall, and thin. Basically, it’s your plants’ way of trying to reach as much sunlight as possible.
That being said, every plant has something called their “light saturation point,” or the point when plants can’t utilize every bit of sunlight that they are being exposed to. As long as you keep your lighting within a reasonable amount, your plants will probably not reach their light saturation point.
If they do, it turns into a waste of light, electricity, and time – when a plant is receiving too much light, it actually does not grow as quickly, since there is no point for it to grow bigger for the purpose of receiving more sunlight when it already gets too much.
TIP: Looking to buy seeds? Visit the ILGM marijuana seed shop
A simple way of reducing the amount of light your plants are receiving is by moving your lamps higher, making them further away from the plants. If they need more light, move the lamps closer. It’s as simple as that!
Sometimes people think autoflowering plants don’t require light to grow. That’s incorrect. Autoflowers need light to grow and develop, they just don’t need light shortage to initiate flowering.
So, be sure to give your autoflower seedlings enough light to set up for a strong plant. Here’s my selection of autoflowering strains.
Marijuana plants that are stretched out tend to be that way because of certain environmental factors. Stretched out marijuana plants will not produce sturdy stems that can support several branches, buds, and leaves. So, it’s important to ensure that the marijuana plants aren’t stretching out too thin.
A simple solution to this problem is to bend the stem back and forth. While this might seem to put a lot of stress on the plant, it actually forces the stem to tear and then rebuild in that space. The stems become much sturdier as a result.
Other solutions to this problem include using an excess of blue light, maintaining temperatures at around 80*F, or making sure that plants have all the light they need available to them. If light is scarce, the plants will start to elongate in order to reach the light source. For more tips on how to avoid stretching, read the article Stretching marijuana plants
Tip: read everything about the vegetative stage or flowering stage
Once the plant is fully grown you will need to start thinking about flowering and harvest time. Our free little Harvest Guide will help you determine the best moment to cut your plants. .
Thanks for reading. Please leave comments or questions below and don’t forget to download my free grow bible
The founder of I Love Growing Marijuana, Robert Bergman, is a marijuana growing expert that enjoys sharing his knowledge with the world. He combines years of experience, ranging from small-scale grows to massive operations, with a passion for growing. His articles include tutorials on growing…
How much should I water my plant?
How much to water your houseplant is the most important thing to get right, but most books and blogs give unclear or conflicting advice.
We’ve read them all and summarised here – so you don’t have to.
When you’re at home
All Patch plants have a care guide on their product page which will tell you about their watering needs. Again, it very much depends on their natural environment. Dry desert plants may be used to going for a while without water whereas tropical rainforest plants are used to regular showers and high humidity.
Over-watering is much more common and equally as harmful as under-watering, so always make sure that excess water can freely run out of your plant’s soil through the holes in the bottom of its nursery pot (the brown one that it comes in).
Letting your plant sit in water will be terrible for its health so, after watering, check the decorative pot for excess water and pour it away after half an hour or so. Similarly, don’t be tempted to repot your plant directly into pot without drainage holes; it usually ends badly!
When it comes to watering your plants be flexible, and don’t be afraid to get your hands dirty. Rather than scheduling in a certain day each week to blindly water your plants, regularly feel down into the soil an inch under the surface. Most houseplants like the top inch to dry out before watering, so if it’s dry to the touch, your plant needs a drink. But some dare to be different, so have a look at your plant’s product page if you’re not sure. Early morning is the best time and room temperature water is ideal.
You can judge whether your watering schedule is right for your plant by keeping an eye out for these signs:
- If the leaves are yellowing or droopy you might be watering too much, or may not have proper drainage.
- A plant with dry, curling leaves likely needs more water. Some plants are used to tropical conditions so try moving them to a room with higher humidity like the bathroom or kitchen. Use care though – you don’t want to overcompensate by drowning your plant. Curling leaves can also be caused by over-watering, so remember to check the compost first to see what you think the problem is!
When you’re on holiday.
If you’re popping away on holiday and are concerned about leaving your plant behind there are a few methods we recommend to keep it alive.
There are a couple of useful gadgets which promise to keep your plants happy while you can’t tend to them – check out our accessories to get started. Some products, such as water bulbs, slowly drip water into your plant’s soil to keep them hydrated. Others allow the plant itself to suck up water when it needs – check out hydrospikes for this. For a DIY cheap method for small plants, try putting one end of a damp piece of cloth in your the soil and the other in a glass of water – as the plant needs more moisture it will wick it up through the cloth. For large plants, place several layers of damp newspaper on top of the soil before you head to the airport.
Ten watering rules of thumb
Let’s get down to it by setting out 10 rules of thumb on watering plants.
To begin, herbaceous root systems require near 100% humidity, ideally, at all times, otherwise the root tips die back. The root tip is the very small end of the root that is divided into 3 zones. The length is variable based on many considerations such as plant variety, tempera- ture, water levels past, and many more. This tip is responsible for the taking up of the vast majority of minerals and water. Root hairs facilitate this uptake and occur in the last or third zone. After the third zone the root tissue begins to lignify and become more impervious to water and nutrients. Kill the tips and the root has to regenerate one before going forward.
Roots grow in response to depletion zones, or areas where the root has absorbed all the minerals and water located there. When the material is not replaced, the root extends to find more. Roots have to grow. When nutrients and water are abundant, the root system does not develop in balance with the shoots and a carbohydrate limited condition presents itself weakening the plant. Allow the plants time to dry and thus use up the minerals present. Conversely, hold them too dry and a condition known as chronic underwater or underfeed can manifest. The root tips will also die back limiting further plant development.(Fig 1-3)
Figure 1-3 Good Strong Roots in Coco
3. Keep all drains open
Figure 1-4 Irrigation depth profile
and soil type
Well drained medium can have water applied for a longer period (ON time) because the excess drains quickly from the medium when the application ceases. Poor drained mediums have much shorter application time (but application rate has to be slower for absorption) because it will take longer to drain the excess water away from the root surface. (Very poorly drained mediums are impossible because the rate of application has to be slow to absorb and with the drainage time, can never be watered throughout). (fig 1-4)
4. Determining root health
The general rule of thumb for determining the root health and irrigation needs of a system is that 1 square meter of bench top, covered with leaves, will use 4-6 liters of water a day. New plants, or where the square meter is not covered totally with leaves, will use about 3 liters a day on average. This is true whether there are 2 plants or 20 in the square meter. Build the system to be able to supply this amount across each watering and for however long you want to go without mixing more. Use this figure to decide how well the plants are working. If it is using less, either the roots are having a tough go, the humidity could be too high, the temp could be too low, and so on.
5. Water cycle
When figuring water cycle on a crop of more then one plant, base times on an average of all the plants. For instance, we want to water most mediums (except aeroponics) when about 50% of the total volume of the water is used or gone. Set automatic systems to turn on when 50% of the crop is ready. To accomplish this, keep everything the same; medium, plant age and size, light exposure, air currents, and so on. Above all else, keep the crops developing equally.
Figure 1-5 Just watered weight
With organic or inert medium, water when 50% of the water you applied last time is gone. In some instances, the grower can weigh the container bone dry, water to drainage and weigh again. The difference is how much wa- ter the container will hold. Water when the scale reaches half this amount lost. After planting, the same will hold true through the early stages. By then, the grower should be able to tell, as long as they realize that the plant is gaining weight as well. (Fig 1-5, 1-6)
In aeroponic systems, you have to be good at judging when the root surface has just lost the free moisture on it while not falling much below 100% humidity (air). This will require constant monitoring especially where the roots are exposed to free air.
8. Keep roots in the dark
Figure 1-6 Time to Water
Roots like the dark and really try to grow away from light. Keep them as lightless as possible in systems that are thin walled PVC, or an air chamber.
9. Never too much water
Remember, in a container with medium and drainage holes, you can not put in too much water, just too long an application. For example; a 5 gallon pot can have 3 gallons applied in 5 minutes or 20 gallons (if the medium does not flush away) but there will be the same amount left in the container ten minutes after stopping application and this is the only important point.
10. Preferably don’t water at night
Cycles have to be adjusted during the dark period of the lighting cycle because the plant is using much less water. The dark cycle is critical to plant development. This holds true for cloudy days or high humidity periods. Media that holds water (peat, rock wool, etc), seldom if ever need watering during the night as long as the grower adjusts the irrigation cycle to water in the last half hour of light or first half hour. Aeroponics or clay pebbles will need an infrequent application a few times during the night.