Silica Powder

Rated 4.86 out of 5 based on 21 customer ratings
(21 customer reviews)


Why Use It?

Stimulates proper cell structure and strengthens plant tissue for healthy, flourishing plants even in adverse environmental conditions such as heat, drought and frost.

Product Documents

Not Available in California

Product Description


Easy replacement for any Potassium Silicate product you can find on the market today.

Silicates used in standard liquid silica products are not plant friendly or plant available.

Substitute with a Natural and Organic Silica Powder to your Nutrient plan. Specifically designed to help your plant respond better to wilt, heat, stress and drought. At the same time Silica is developing your plants cellular walls increasing stem strength and overall health.

Our Silica Powder is not a potassium silicate powder product. Derived from Silicone Dioxide, a porous mineral rock which differs greatly from the potassium silicate powder.

Product form:

Dry powder, water flow-able

NPK analysis:


Product designation:


Well suited for:

Hydroponics, soil and soil-less.

Other product highlights:

Product composition: 65% silicon dioxide, 5% potash. Product is an organic silica and has a neutral pH.

Primary function/use:

Aids in creating strong cell walls, which results in strong stems. Improve resistance to wilt, heat, stress and drought.

Directions For Use

When and where to use:

During all stages of plant development.

For hydroponics, soil and soil-less:

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


Product will settle over time. Shake well before use.


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

What to Expect:

Silica Powder makes it easy for your plants metabolism to function properly by balancing nutrient absorption during the vegetative stage to improve fruit and flower production during the bloom stage.

Plant structure is vital for holding the weight of fruits and flowers. Strengthen your plants cell walls, increasing the plants natural defense against disease, drought and pests.

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.

21 reviews for Silica Powder

  1. Rated 5 out of 5

    Aaron (verified owner)

    You want nice strong leaves, stems, and roots, get yourself some of this! I’d say, it’s only been 3 months, but I can tell in my hand-sized leaves that this silica is doing something great to my grow. Great price, ships wicked fast. Return customer right here!!

  2. Rated 5 out of 5

    Ryan (verified owner)

    Great product. Works well. This is a very beneficial additive.
    It is not soluble, however. I could not use it in my aeroponic system, but it is a great additive for soil or certain hydroponic systems, especially since there is typically no silica in soil-less method.

  3. Rated 5 out of 5

    Gina (verified owner)

    Great product, it saved my tomato from damage when the top of the plant bent over the cage it was in. Added 10 foot stakes and lifted it and to my amazement had minor damage. It could have been a real mess, but just a few minor cracks in the very top branches

  4. Rated 5 out of 5


    Great addition to any soil built from the ground up. Used a cycle back finding that my plants stalks and stems were much stronger and larger than normal. I’ve also noticed that less fruit dropped and flowers just seemed healthier. I’d imagine that a larger stem system basically allowed water and Nutrient to flow more productive. Great product

  5. Rated 5 out of 5

    Tim (verified owner)

    Definately gives a more robust, thicker stem and overall more vigorous growth. Very good product.

  6. Rated 5 out of 5

    Chris (verified owner)

    I have a very very high temperature for my grow area which is beyond my control, and this product helps my plants to withstand the stress much better. Also I have not experienced any clouding that I have read of people experiencing with other silica products on the market.

  7. Rated 4 out of 5


    I first used this and was pretty impressed!! I think I do great organic gardening already, but this really makes a difference. I mainly use it a preventive maintenance. Disease, pests or shock will be almost extinct if used on a regular basis. Your plants get strong when this is used. Also as a stand alone foliar spray makes leaves strong and tough!! Liquid armor is what I call it.. I’m very excited that they offer this in powdered form. Great stuff indoors and as foliar feeds.. K4L has done it again with this hit!! Thanx

  8. Rated 5 out of 5

    Dane Theisen (verified owner)

    Silica powder from Kelp4Less is an excellent addition to your indoor or outdoor garden. It has made my plants more resistant to powdery mild, high heat and high stress conditions ; giving them the defense and insurance they need to create bigger, denser bud sites .Not to mention my stalks are harder and more sturdy. Now I don’t have to tie some of my plants up on bamboo stalks during week 5-10 of flower. This product works just as good as RAW Silica or higher priced designer products like Rhino Skin by Advanced Nutrients. Don’t pay for water, add Kelp4Less Silica powder to your gardening mix.

  9. Rated 5 out of 5

    Jason (verified owner)

    First year using silica powder and I am extremely happy. Plants withstand wind better, I live in hot, humid conditions and plants respond well. No wilting! I am very happy and will order again.

  10. Rated 5 out of 5

    jasontramonto (verified owner)

    Everything I feed this to is more rubbery, sturdy, and stable. I feed about 1/4 to 1/2 tsp per gallon of root drench about every other week. Looking forward to combining this with the bloom pack on my tomatoes this summer.

  11. Rated 5 out of 5


    Good deal,make your own “Pro-tec”.Why pay for water?

  12. Rated 3 out of 5

    ibjharlan (verified owner)

    Great product. For soil I would give it 5 stars. As I do high pressure areoponics, its not entirely water soluble and collects on bottom of my tank.

  13. Rated 5 out of 5

    randall (verified owner)

    my buds love this and so do my other buds. would recommend this product to everybody

  14. Rated 5 out of 5

    A. S. (verified owner)

    Picked up this to help with the over 100 degree summer temps and generally arid conditions. Even with reduced watering compared to the year before did not see any wilting in the outdoor tomato and pepper beds even in full sun. Definitely plan to use again next year.

  15. Rated 5 out of 5

    Jason Terry (verified owner)

    This product has been in my feeding program for 3 years. I can tell a huge difference in plant health. Stronger, and more vibrant. I have been using and already re-ordered for next. Great product highly recommend.

  16. Rated 5 out of 5

    Monica Garcia

    bought this product recently along with the extreme blend. they work really well together.

  17. Rated 5 out of 5

    Bill Novicky (verified owner)

    My favorite K4L product. Silica is not a needed element for plants but what a difference it will make in your garden. This silica is a great addition to any of foliar spray and don’t forget a nice root drench with it as well.

  18. Rated 5 out of 5

    Chris Dutton (verified owner)

    I’ve been using silica in my grows for about two years.. I could tell the difference in plant structure from the first grow… I am a silica user for life now…

  19. Rated 5 out of 5

    A Smith (verified owner)

    Great product, have used for over 4 years, way better than the liquid silica on the market,

  20. Rated 5 out of 5

    John Morton (verified owner)

    This is a fantastic product. I apply to all of my subtropical fruit trees 2-3 times a year along with other nutrients. The silica does a great job reducing stress in plants overall.

  21. Rated 5 out of 5

    bountybox (verified owner)

    Adds noticeable strength and vigor in my plants. Disease has been at an all time low in the garden since using Silica Powder. I love the punch of power in my botanicals.

Add a review

Your email address will not be published. Required fields are marked *

You may also like…