Organic Kelp

(3 customer reviews)


Kelp contains over 75 vitamins, minerals and micronutrients. Stimulates vigorous root development and plant growth. Increases plant tolerance to stress, frost, pests, disease and drought. Great for all stages of grow and bloom. Kelp works so well it’s why we built our entire business around it.

Not Avail in California


Product form:

Dry powder, water soluble

NPK analysis:


Product highlights:

Contains naturally occurring plant hormones and provides a balance of major and minor nutrients, enzymes, amino acids, humic acids and other organic substances. Over 80 identified elements in all.

Product designation:


Well suited for:

Hydroponics, soil and soil-less.

Product Comparison Results:

Plant Growth

With Kelp

Fruit and Flower Set

With Kelp

Primary function/use:

All-purpose growth amendment for plants and roots.

When and where to use:

All stages of plant development. Use Kelp powder to improve specific growth states. For example, to promote buds, apply kelp when plants are beginning to bud.

Use to extend shelf life of fruits and vegetables by spraying 10 days before harvest. To lengthen life of cut flowers, spray 1 to 2 days before cutting. For maximum effectiveness, apply every 4 to 7 days.

A foliar application is the most efficient and effective method. Kelp extracts are 8 to 20 times more effective when applied to the leaves then when broadcast on the soil.

For rooting and transplanting:

Mix ¼ tsp. with one (1) gallon of water. Dip roots, transplants and clones in solution before planting.

Foliar spray:

Mix ¼ tsp. with one (1) gallon of water. Spray as a fine mist until it drips off the plant surfaces.

For seedlings:

Mix ¼ tsp. with one (1) gallon of water. For seeds, soak in solution for 30 seconds.

For hydroponics:

Mix ¼ to ½ tsp. with one (1) gallon of reservoir water.


Ensure bag is properly sealed and stored in cool, dry, dark place.

Additional information

Weight N/A

3 reviews for Organic Kelp

  1. Tom Winrow

    As a USDA certified Organic aquaponics farm we have to be very careful about every input on our farm. And after doing thorough research on the limited number of OMRI approved suppliers, we decided on purchasing from Kelp4Less not only because they offered the best value, but they were also very helpful on the phone. After the first run of their products (OMRI approved Humic Acid, Kelp, and Azomite) we were beyond satisfied with their products (our plants were too!) and even more impressed by their impeccable customer service. We will continue to use Kelp4less to help us and our plants grow!

  2. Dane Theisen

    A great organic amendment to garden soil. I use this Organic Kelp “Multi-Vitamin” during veg and bloom and only buy it from Kelp4Less. Who else has Kelp in their name? I use this product during all nutrient feedings. A plant that has everything it needs and more, will experience consistent growth and higher yields, than that of a unhappy hungry plant. Be a Kick-Ass caregiver and give your plants the picture perfect life-style they deserve! You’ll thank them later.

  3. barnabasedwards

    I 100% Love this soluble kelp I loved it before Kelp4Less. The quality of this product is there. The plant readiness is there. I use the entire time from start to finish on all my flowering vegetables. If you buy this product you won’t be disappointed. I’ve used these in soil and hydro it is the real deal but don’t take my word prices are so reasonable you can experiment.

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