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Humboldts Secret

Humboldts Secret Tree Trunk - Silicate Additive - Advanced Nutrients - Helps Plants Flourish - Indoor Plant Food - Hydroponic Nutrients - Liquid Fertilizer (32 Ounce)

    • Based on 749 reviews
Condition: New
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$25.98 Why this price?

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Returnable until Jan 31, 2025

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

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Availability: In Stock.
Fulfilled by Amazon
Arrives Friday, Mar 7
Order within 21 hours and 53 minutes
Available payment plans shown during checkout

Size: 32 Ounce


Features

  • PREMIUM POTASSIUM SILICATE-BASED PRODUCT: Tree Trunk features advanced nutrients that will help the plants natural ability to strengthen its cell walls, resulting in thicker stalks and better branch development, as well as abiotic stress tolerance!
  • PLANT STRENGTH: Watch your plants grow by applying Tree Trunk liquid fertilizer. Hydroponic nutrients make our product suitable as quality indoor plant food.
  • ABIOTIC STRESS TOLERANCE: Tree Trunk is needed to ensure yield stability under abiotic stress and minimizes the environmental impacts on crop production.
  • COMPATIBLE IN ALL GROW MEDIUMS: This formula makes for an excellent indoor plant fertilizer suitable for all grow mediums. The usage rate is between 2.5-5ml/gallon (5ml is approx. 1 teaspoon) throughout the entire grow cycle.
  • THICK STALKS & BETTER BRANCH DEVELOPMENT: Our healthy liquid fertilizer will help your plants natural ability to achieve sturdy, thick silks as well as strong and abundant branches.

Brand: Humboldts Secret


Item Weight: 32 Ounces


Item Form: Liquid


Coverage: Medium


Liquid Volume: 32 Fluid Ounces


Is Discontinued By Manufacturer ‏ : ‎ No


Package Dimensions ‏ : ‎ 7.36 x 5.12 x 2.32 inches; 2 Pounds


Item model number ‏ : ‎ Secret Tree


Date First Available ‏ : ‎ August 22, 2017


Manufacturer ‏ : ‎ Humboldts Secret


Country of Origin ‏ : ‎ USA


Best Sellers Rank: #29,828 in Patio, Lawn & Garden (See Top 100 in Patio, Lawn & Garden) #656 in Garden Fertilizers


#656 in Garden Fertilizers:


Customer Reviews: 4.6 4.6 out of 5 stars 749 ratings


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Friday, Mar 7

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
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  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

    • WORKS VERY WELL
Size: 32 Ounce
Helps my house plants grow strong!
Reviewed in the United States on December 3, 2024 by joseph
    • Great 👍
Size: 32 Ounce
Great 👍
Reviewed in the United States on November 23, 2024 by Heather Mcnulty
    • It's silica for plants
Size: 1 Gallon
I've switched to mostly Humboldt. Overall, happy and very good results. Thick strong trunk and branches.
Reviewed in the United States on June 24, 2023 by Steven W. Kelley
    • Works
Size: 32 Ounce
Works great , easy to use and it's a good size for the price
Reviewed in the United States on July 27, 2024 by kyle
    • Extra stiff (Pause) branches and stalks
Size: 32 Ounce
One of the best silica supplements I ever purchased
Reviewed in the United States on May 21, 2024 by Jon P.
    • Does what it says
Size: 8 Ounce
Game changer
Reviewed in the United States on September 8, 2024 by Lisa Jacobus
    • Does it work?
Size: 32 Ounce
I don't see any difference.
Reviewed in the United States on October 2, 2023 by Pirate face
    • I lost 6 trees due to heat stress last summer. Hope to do better this year
Size: 32 Ounce
We have been experiencing unusually hot, dry summers in our zone 8 growing area. We experienced 50 days of 100+ temperatures that killed 6 new trees. I have been using this product to help the replacements to survive the heat this year.
Reviewed in the United States on April 29, 2024 by Mitch Miller

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