(20 customer reviews)


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.

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.)

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.

Additional information

Weight N/A

20 reviews for Kelp

  1. Elaine Clifford

    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. Hydrorod

    One of the best all around organic nutrients that stimulates plant growth as well as blooms. A consistant diet of kelp or seaweed I believe helps to detour pests. Sulfur is a good supplement to add with the kelp, but not to be over used or can lead to magnesium over dose. Highly recommend this product.

  3. Alex

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

  4. Joe

    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. Edward

    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.

  6. Baitman

    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

  7. gloriajliuzzo

    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…

  8. 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!

  9. Donna

    Great for my plumerias

  10. Mike H.

    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 !

  11. SpitFire

    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

  12. Randall

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

  13. Leslie Wilde

    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.

  14. Critter

    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.

  15. Rich Okun

    Fantastic quality, quick shipping, great pricing – completely water soluble – I use it in my reservoir with no problems whatsoever. My plants love it.

  16. Timothy Koch

    It gets my soil micro beasties going fast. In turn my plants really like the extra boost.

  17. Timothy Koch

    It gets my soil micro beasties going fast. In turn my plants really like the extra boost. I love using the stuff.

  18. Timothy Koch

    My plants love the stuff. One week after using it they kick in the growth.

  19. jshep (verified owner)

    Great supplement. I use in conjunction with Humic and Fulvic acid.

  20. Ted Putnam (verified owner)

    I own a lawn care company and have been using this product as part of my program for lawns over the last couple of years. I also use it for ornamental tree/shrub applications. I first found that it helped lawns and shrubs recover from fungal infections in record time when used with fungicide, so I expanded its use in other areas of my business. I’ve been extremely impressed with the results and plan to continue using it whenever possible.

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