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Fish and Seaweed Fertilizer

Fish and seaweed fertilizer for healthy growth and strong roots across the whole garden. Gentle organic nutrition plus kelp's natural growth compounds.

4.6 · 1,600+ reviews on Amazon
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$2.99 flat shipping · FREE over $15

30-day money-back guarantee 1 million+ growers served Made in the USA

Works for the whole garden

  • vegetables
  • herbs
  • roses
  • fruit trees
  • houseplants
  • lawns
  • seedlings
  • container gardens

Results you can see

Feeds foliage for deeper color and a brighter, more lively look.

Feeds foliage for deeper color and a brighter, more lively look.

Encourages fresh leaf and stem growth for a fuller, thriving plant.

Encourages fresh leaf and stem growth for a fuller, thriving plant.

Supports healthy, resilient roots that absorb nutrients more effectively.

Supports healthy, resilient roots that absorb nutrients more effectively.

What's inside your bottle — macronutrients, core minerals, micronutrients, and natural kelp

How to use

  1. Mix

    Shake Well and Add 1 tsp per quart (32 oz) of water.

  2. Feed

    Water your plants as normal. Spring & summer: every 1–2 weeks. Fall & winter: every 4 weeks.

  3. Grow

    Watch how your plants thrive!

Frequently asked questions

Is this a complete fertilizer?

Yes. Fish supplies nitrogen, phosphorus and potassium in a gentle organic form, and seaweed adds potassium, micronutrients and natural growth compounds. It suits nearly everything in the garden.

How long will one bottle last?

At 1 tsp per quart, the 8 oz bottle makes about 48 watering cans of feed. For a typical shelf of 10–15 plants fed every 1–2 weeks in season, that's several months of feeding — and the 32 oz bottle four times that.

Does it smell?

It has a mild ocean scent when you pour it that fades quickly once watered in. Feed outdoor plants in the morning and the smell is gone by afternoon.

How often should I use it?

Every 1–2 weeks in spring and summer and every 4 weeks in fall and winter, mixed into your normal watering. For new plantings, apply at planting and again a week or two later.

Which plants can I use it on?

Anything — vegetables, herbs, roses, fruit trees and houseplants, and the rest of the garden. It is not plant-specific.

When will I see results?

Roots respond first. Within two to four weeks plants hold moisture better and recover from stress faster; visible top growth follows.

Let's Start Growing!

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Fish and Seaweed Fertilizer $11.99