100% Organic Soluble Seaweed Extract Derived from Premium Cold Pressed Atlantic Kelp

$12.00 USD

Size: 100g


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What is it? Made from premium cold-pressed Atlantic kelp! One-Shot Seaweed Extract promotes healthy germination and superior growth in seeds, veg cycle & flowering plants. Green Rush Nutrients Seaweed Kelp Extract includes macro & microelements, amino acids, vitamins, cyotkinins, auxins, & numerous other nutrients that work together to stimulate growth and production of roots and plants. 

Why One-Shot? Our Organic Kelp Extract is Water-Soluble & You Only Need 1 gram or ¼ teaspoon per liter of water.

High in available potassium. Soluble Potash (K₂O) 16.0%. Increase Crop Yield, Improve Resistance to Disease & Outdoor Elements, Enhance Early Germination & Growth.

Mixing Instructions: 

When germinating add in 1/8 teaspoon to the water used to germinate. Make sure to mix the solution thoroughly before adding to the seed.  

In Seedling phase  add in 1/8 teaspoon to the water used to feed the plants, mix thoroughly and apply to plants.

In Veg and Bloom:

If you're using Green Rush Nutrients Leafy Green Grow and Beefy Bud Bloom add in the seaweed extract once every 3 weeks throughout the grow cycles.

If you're using the Seaweed Extract solely, add 1/8 to 1/4 teaspoon per litre of water, weekly, in the Veg and Flower stage.


Use seaweed extract, as a water mix-in, top-dress or as a foliar spray. Suitable for a full range of plant types including leafy greens, vegetables, orchids, tomatoes and more.

Water mix-in or as a foliar spray: Mix 1 gram or ¼ teaspoon per liter of water. Mix until dissolved and apply to the plant. 

Additional Information

100g, 400g


Customer Reviews

Based on 21 reviews
Garden Boy260

Greats products will buy again!

Awesome stuff

I've only been using this a short time and I've gotten such great results! Everything is growing so good. And quickly

Best in the market

I have barely been using my seaweed extract from Green Rush nutrients for a little over two weeks and I already see a significant difference in my plant growth my plants are healthier than ever all thanks to Green Rush nutrients
Thank you

Doug Cowan
Great products

I've been using green rush Nutrients for a while and love how simple it is to use just add shake pour and in between feeding I just dab a bit of seaweed extract in my water and my plants love it thanks green rush Nutrients for amazing results


Very easy to use