Rated 5.00 out of 5 based on 18 customer ratings
(18 customer reviews)


Why Use It?

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.

Product Documents

Not Available in California

Product Description


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.

Primary function/use:

All-purpose growth amendment for plants and roots.

Well suited for:

Hydroponics, soil and soil-less.

Product Comparison Results:

Plant Growth

With Kelp

Fruit and Flower Set

With Kelp

Product designation:

Natural (This product is a candidate for organic certification. To ensure the lowest price, Kelp4Less has chosen not to register this product.)

Directions For Use

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.

For seedlings:

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

Foliar spray:

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

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.

All items are shipped using USPS Priority Mail, unless otherwise requested and arranged by the customer, prior to order completion.Free Shipping

All orders ship within 48 hours of order confirmation and as always FREE SHIPPING in the USA. After successfully placing an order from you will receive an order confirmation email with the details of your order to the email address provided.

Once your order has shipped you will be emailed specific tracking information.

To check the status of an order please visit our “View Order” page.

Gift Cards are electronically delivered to your email address.

State of Idaho is not an option for shipping any of our products. If you are in the State of Idaho, please contact us direct.

Kelp4less Disclaimer

While Kelp4less has made every effort to ensure accuracy of information on its website and labels, Kelp4less assumes no responsibility or liability for the use and results of any of it’s products.

The purchaser and the end user of Kelp4less products assumes sole responsibility and liability for product use, results and disposal. Kelp4less makes no guarantees either express or implied.

18 reviews for Kelp

  1. Rated 5 out of 5

    Elaine Clifford (verified owner)

    Since I have been using this kelp, my roses have taken on a new lease on life; the new growth is tremendous!. I have never seen such blooms, and all my neighbors have commented on them. I now use the kelp on everything in my garden, from tomatoes, shrubs and flowering plants, to trees! Every growing thing has benefited from the feeding with kelp. It is easy to use and is very economical.

  2. Rated 5 out of 5

    Alex (verified owner)

    This product is amazing. Way better quality, and far less expensive than the liquid products you find on the market nowadays.

  3. Rated 5 out of 5

    Edward (verified owner)

    Excellent product works perfect for many applications. Kelp4less has the best price anywhere. I have been using it for 2 years now. I have used it as a foliar spray to prevent BER and a quick boost for our plants. As the season wears on I use it to add back nutrient and re-mineralize the soil in Planters. Plants can use up a Planter’s soil pretty quickly drenching the soil with Kelp is a quick and safe way to add back the good stuff. It’s just convenient and easy to use. It helps to keep a healthy root system as well. Personally, I prefer Kelp in it’s dry form is less bulk. Also, why pay for water? I have a filter which remove chlorine and personally I trust my water best. This a 5 star product all the way.

  4. Rated 5 out of 5

    Joe (verified owner)

    I believe this stuff brought my tomato plant back from the near dead. After I transplanted this tomato plant, it had a very strange reaction (the entire plant looked extremely wilted, but it had no dead or discolored leaves), and I was ready to give up on the plant completely. On a whim, I sprayed the leaves with this kelp, and, within a couple of days, it lost the wilted appearance, and it now looks completely healthy. I feel pretty confident that the kelp helped it to recover from whatever it’s ailment was.

  5. Rated 5 out of 5


    You can never go wrong when working with this product. This stuff is just amazing. Yours plants always look a little more green, a little more healthy, a little more awesome!! Something about kelp makes plants insane.. Imagine plants liking kelp like cats like cat nip.. It’s just a experience you have to use to see. Hey this website is called Kelp 4 Less for a reason. This will always be used at spitfires grow!! Making my own doses of “super drinks” on a daily bases and this product is why I come here to shop. I love that I can make my own drinks for my own situations, any time I want. I don’t have to mix up a bunch of different synthetics to make what I’m looking for for each plant.. I’m still pumped up I get to order great products like this without the hefty price tag. Big Ups K4L

  6. Rated 5 out of 5

    Randall (verified owner)

    Great product. Great price. I am going to add it to a small vineyard spray program.

  7. Rated 5 out of 5

    Leslie W.

    I used to wander the aisles of grow shops reading lists of ingredients from extremely expensive nutrient bottles. I noticed that kelp was in just about all of them. So I went online looking for a source of kelp so I could produce my own concoctions. To my good fortune and surprise I found Kelp4less where I can buy everything my plants need in one place, at a fraction of the cost, inconspicuously.

    I tell everyone I know about Kelp4less and share my recipes for success.

  8. Rated 5 out of 5


    A amazing quick pick me up for any plants. And good dose cures any immediate nutrient issue and a light does works well to feed active growing.

  9. Rated 5 out of 5

    Baitman (verified owner)

    Great product and buying powder instead of liquid saves a lot of money. I use this in and near my planting hole and make a weak seed soaking solution.

    I foliar feed my pumpkins weekly

  10. Rated 5 out of 5

    gloriajliuzzo (verified owner)

    Bought last year and used to establish my front lawn and couldn’t believe how much grass grew. Then I used on my wilted plants and quickly they were brought back to life. So happy I found this site as I believe buying straight from the manufacturer you get the best prices. I’m here today to buy another pound so I can start my seedlings and add to my vegetable garden and fruit trees. Since the Kelp was terrific I bought more products from this site. Again, I can’t wait for another growing season with my Kelp4less products. Thank you…

  11. Rated 5 out of 5

    Peter Trzos

    I finally got off my butt, and started using this as a foliar spray… I’ve never had tomato plants do so well before, and they’re eclipsing the growth rate of my neighbor’s (hahahaha!). I’m writing directly on my wooden trellis the last time I used the product, so I can be sure to reapply as soon as possible! I neglected some of my tomato plots, and I hope this will help them recover, and catch up to some of my better plants… I’ll let you know!

    Oh, a pound of this stuff will last you FOREVER, so don’t be scared away by the price! It’s a one time, multi-year lasting investment which will easily pay itself off in the first season through increased plant yields! Whether you’re selling to restaurants, at a local farmer’s market, or just supplementing your family’s diet, kelp will make you money!

  12. Rated 5 out of 5


    Great for my plumerias

  13. Rated 5 out of 5

    Mike H. (verified owner)

    OH BOY be careful when you use this stuff for indoor grows unless you have 20 foot ceilings…Turned stalled veg plants around in 48 hrs….Amazing !

  14. Rated 5 out of 5

    Richard Thomas

    I have been using Kelp4Less products for several years now and don’t use anything else. Kelp in both liquid and granular form works extremely well. I get stellar results, just ask my neighbors who comment all the time. For value for money, performance and economy you will not get a better result anywhere.

  15. Rated 5 out of 5

    Greg Egle (verified owner)

    I use this fulvic acid in my commercial growing facility. It’s a great value and there is definately a difference in the vigor and growth of my plants.

  16. Rated 5 out of 5

    Greg Egle (verified owner)

    I use this product in an nft system for growing lettuce. Amazing results when combines with fulvic/humic blend and fish hydrolysate. Plants are thriving.

  17. Rated 5 out of 5

    Gary Rairigh

    I use the Humic Fulvic Acid blend my plants just thrive! Great prices and service ,shipping is a big plus! I recommend Kelp 4 Less to everyone. Also the 10-50-10 sure makes a difference in bloom!

  18. Rated 5 out of 5

    A Smith

    Great organic PGR for hardness, yield, way better than the synthetic’s out there

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