Fish and seaweed fertilizer

Neptune’s Harvest Organic Fish & Seaweed Blend Fertilizer – 36oz Concentrate

Concentrate makes 32 Gallons

Neptune’s Harvest Organic Fish/Seaweed Blend Fertilizer is an Organic fertilizer that combines the benefits of fresh fish remains and seaweed.

Neptune’s Harvest fish hydrolysate contains vitamins, amino acids, enzymes, and growth hormones. It also contains the micro and macro nutrients naturally found in fish. The nitrogen and other nutrients are already chelated, so they are readily available for plant consumption. Unlike fish emulsions, Neptune’s Harvest retains the fish proteins and oils. The Seaweed is an organic storehouse of over 60 naturally occurring major and minor nutrients and amino acids. It has growth promoting substances which enhance plant development, color and vigor and has also been found to increase plant hardiness and resistance to adverse environmental conditions, such as early frost, extreme heat and lack of moisture.


  • University studies have shown Neptune’s Harvest to outperform 20-20-20 fertilizers
  • Increased marketable yields for fruits and vegetables
  • Improved shelf life on fruits and vegetables
  • Increase in Plants natural sugar
  • Stronger and more colorful flowers and foliage
  • More plentiful, fragrant, and longer lasting blooms


Hydrolyzed North Atlantic Fish, Phosphoric Acid (Stabilizer), Seaweed (Ascophyllum Nodosum), Potassium Hydroxide (A Processing Aid), Molasses, Humic Acid, Yucca Extract.


Shake well before using. Prepare for one application only. Do not store diluted fertilizer.

House Plants: 1 Tablespoon per Gallon of water. Feed every 2-3 weeks. Water lightly so that diluted fertilizer does not remain in drip dish.

Outdoor Plants: 1/8 Cup per Gallon of water. Feed vegetables, flowers, trees, and shrubs, every 2-3 weeks. Apply generously to soil or as a foliar spray, until leaves are wet, top and bottom. It is best to foliar feed early or late in the day.

Compost Enhancer: 1/4 Cup per Gallon of water every 2-3 weeks.

Seed Germination: Soak in a solution of 1 teaspoon per cup of water.

Meets the requirements of the National Organic Program (NOP) for use in organic production


Yates Thrive Natural Fish & Seaweed +

The complete all purpose plant food solution when you’re after just one premium and easy fertiliser solution.

A unique, enriched, complete garden fertiliser containing a combination of natural and inorganic ingredients. Sometimes nature needs a little bit of help so Yates has boosted the natural fish and seaweed based nutrients with added NPK to deliver optimal plant growth and a balanced fertiliser for your garden.

Key Benefits

Combines fish, seaweed, humates, microbes, molasses, NPK & trace elements to both nourish plants and enrich the soil.


  • Fish – to grow more prolific foliage, flowers & fruit.
  • Seaweed – for plant & root health.


  • Humates for improved plant nutrient uptake.
  • Bio-Active microbes to unlock plant nutrients in the soil.
  • Molasses to maintain soil microbe health.
  • NPK nutrients for fast and strong plant growth.
  • Trace elements for plant health and vitality.

Contains 100% cold composted seaweed and fish (think cold pressed olive oil!), a gentle extraction method that preserves more of the delicate plant growth boosting compounds in seaweed and fish, retains valuable fish oils, providing plants with essential nutrients for healthy growth, while boosting soil microbe and earthworm activity.

Tip – To boost plant root growth and general plant health, especially after periods of stress, use Yates Thrive Natural Seaweed Tonic as a supplemental application every 2–4 weeks.

How To Use

  • Always dilute Thrive Natural Fish & Seaweed Plus with water before applying to plants or lawns.
  • 1 capful = approximately 40 mL.
  • Apply all year round as directed.

Plant Type / Application Rate

(in 9 L watering can or sprayer)

Frequency / How To Apply

All plants in pots and garden beds
40–80ml (1-2 capfuls).
Repeat every 1–2 weeks during active growth.
For maintenance, apply at 2-3 week intervals at lower rate.
Apply over leaves and soil.
Use lower rate for immature plants.
Covers 3–4 m2.

Delicate plants, e.g. ferns and African violets
20ml (half capful).
Repeat every 1–2 weeks during active growth.
For maintenance, apply every 2-3 weeks.
Apply over leaves and soil.
For African violets, only apply around base of plant, do not wet leaves.

Large shrubs and trees
80–120ml (2-3 capfuls).
Repeat every 2 weeks during active growth.
For maintenance, apply every 3 weeks at lower rate.
Apply over leaves and soil around base of plant.

Established lawns
80-160ml (2-4 capfuls).
Repeat every 2 weeks during active growth.
For maintenance, apply every 3 weeks at lower rate.
Apply 9 L of solution over 18m2 using a watering can with sprinkler bar attachment.

Seedlings, Transplanting, New plantings and New lawns
Use Yates Thrive Natural Seaweed (about 2–6 weeks), then feed with Yates Thrive Natural Fish & Seaweed Plus as above.

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