Humboldts Secret Golden Tree Liquid Plant Food | Enhances Growth Indoors or Outdoors | All-in-One Plant Nutrients for Vegetables, Trees, Flowers, Fruits, Roses, Lawns, Tomatoes | 16 Ounce
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Availability:
In Stock.
Arrives
Monday, Aug 24
Size: 16 Ounce
Features
- All-In-One Plant Additive: Golden Tree is a concentrated liquid plant food designed to improve plant health from roots to leaves. It enhances nutrient uptake, supports stronger stems, and helps produce vibrant, thriving plants. Use it with your regular fertilizer routine to boost growth and maximize yields in any grow setup.
- Indoor And Outdoor Compatible: Whether you're maintaining houseplants, potted herbs, or greenhouse greens, Golden Tree works as an efficient indoor plant food solution. It delivers consistent, noticeable results for indoor gardeners looking to strengthen root systems, promote foliage, and improve overall plant structure.
- Supports Garden Performance: Golden Tree functions as effective plant food outdoor, ideal for backyard gardens, raised beds, and outdoor planters. It improves soil condition, increases nutrient delivery, and helps your flowers, vegetables, fruit trees, and lawns flourish in real-world growing conditions.
- Complete Nutrient Blend: This formula contains kelp, carbohydrates, and minerals that provide essential plant nutrients for strong growth and stress resistance. It supports every stage from seedling to full bloom, helping plants develop deeper roots, resist environmental stress, and produce better overall results.
- Trusted Brand Quality: Humboldts Secret is trusted by gardeners across the country for delivering dependable results and consistent plant performance. Just 16 ounces of this high-concentration formula makes up to 224 gallons of solution, offering exceptional value and long-lasting support for all your growing needs.
Brand: Humboldts Secret
Item Weight: 16 Ounces
Item Form: Liquid
Liquid Volume: 16 Fluid Ounces
Specific Uses For Product: Hydroponics,Plant Food
Brand: Humboldts Secret
Item Weight: 16 Ounces
Item Form: Liquid
Liquid Volume: 16 Fluid Ounces
Specific Uses For Product: Hydroponics,Plant Food
Global Trade Identification Number: 92
Manufacturer: Humboldts Secret
UPC: 859680937492
Unit Count: 16.0 Ounce
Product Dimensions: 12 x 6 x 12 inches
Item Weight: 1 pounds
Item model number: Secret
Is Discontinued By Manufacturer: No
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Monday, Aug 24
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.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Similar Products
Top Amazon Reviews
Size: 2 Ounce
I use the whole Humboldt's Secret nutrient line on plants grown indoors in tents with automated lighting, circulation and exhaust fans and manual feeding, watering, temperature and humidity controls. My flowers are cup quality, every time. Top quality nutrients, broad spectrum, easy schedule and dosing and super reasonable compared to other brands with comparable offerings. On average, I'd say my return on investment in yield:nutrient is about 50:1. Hard to argue that. I'm a believer.
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Reviewed in the United States on January 20, 2026 by Jason Gonzalez
Not bad! Using it on my flower garden. The annuals....impatien, petunia, viola showed faster growth and more vibrant colors in 3 days after applying 1/2 teaspoon per gallon. Careful on the marigold though. They burned with the same mix, but coming back strong on day 6. Will mix 1/4 teaspoon per gallon on those for the next feeding. The perrenials...columbine, lavender, snap dragon, begonia, lithodora, allysum, asian lily and geranium took about 5 days to show very minor improvement. None burned with the 1/2 teaspoon mix but will go with 1/4 teaspoon mix for next feeding on those to just play it safe. Tested on one of 6 different variety's of hybrid tea bare root roses that have been in the ground since early February and this thing has exploded in the best way in 5 days. WOW! It was the weakest looking of the 6 and it is now overtaking the others. Will stick with the 1/2 teaspoon mix on the bare root roses until after I see how a mature, full sized rose bush reacts to my feeding it this morning the full teaspoon mix. My 3 tomatoes, a yellow heirloom cherry, San Marzano heirloom and sweet red cherry liked the 1/2 teaspoon mix 6 days ago and growing faster, fuller since. Strawberry's not good with my test of a 1/2 teasppon mix on 1 of 4. It burned within a day and a half and is now dead in 3 days. No Golden Tree on my strawberry's until I get some feedback. Bummer! My cantaloupe took off within 3 days of a 1/2 teaspoon mix on it and will be applying same on a jalapeno, bell pepper, mint and chive for thier first feeding's tomorrow. All in all...I'm very happy. I like the organic factor and the results have been noticeably remarkable, strawberry aside. Now' if Humboldt figured out a way to put some ingredient in there to defeat the gohers?....I'd have the best of both worlds.
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Reviewed in the United States on April 27, 2015 by Larry T
Size: 2 Ounce
I will start off by saying I bought a 2 ounce of this plant food over a year ago and stashed it to use in my garden this year. Well, not only did it keep extremely well it also is a miracle for my garden! For the first month of my garden, I used my previous fertilization program but didn't see much growth in my plants. The beginning of the second month I decided I was going to use this plant food in addition to my fertilizer plan. It has amazing results! Not only do I use it on my tomato plants, my peppers, cucumbers, watermelon, cantaloupe, lettuce and strawberries, it also works wonders on all the rest of my plants including my fresh herb garden and flowering plants! My garden and yard have so much color now it's unbelievable, and by taking pictures every week of my garden's progress the difference is astounding. Recently my cantaloupe and cucumber plants ended up being a target for rabbits, but even with doses of this stuff every two weeks these plants have made a remarkable recovery! Because of the expanse of all my plants, I just placed my next order for this amazing fertilizer and can't wait to continue using it! Also: my fertilizer is a mix of kelp, fish, and myco tea in addition to use of Golden Tree. I also regularly place a mix of compost on the soil for additional nutrients, support and moisture control which is a blend of grass clipping, coffee grinds and fresh mulch.
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Reviewed in the United States on June 20, 2019 by Jess A. Short
Full disclosure: I received a promotional offer for my review. I rely on honest opinions and reviews, in order to make an informed decision as to the suitability of a product before I make a purchase. In turn i like to share my product experiences with others. Here in New England we had a rather long winter season, and as a result, the roads were overdosed in salt and other ice melting chemicals. This resulted in my front yard receiving a rather unhealthy amount of salt, thereby causing my ornamental plants to suffer with late budding. I tried to flush the affected areas with R/O water to loosen up and drain away any contaminates. Afterwards, i came across Golden tree in my searches for sick plant nutrients and soon began digesting all that I could learn from the manufactures claims as well as all of the public comments. The claims seemed to be miraculous, so I decided to order a bottle and wait the 2 additional days to give my trees a healthy nutrient feeding. Upon receiving my bottle I carefully read the instructions, as it was stated that Golden tree is highly concentrated and replaces many other types of plant supplements. I carefully measured out 5ml for 1 gallon of water and added 5ml of Dyna grow Folliage pro for each tree. My trees began to respond rather well to this Golden Tree, both in terms of budding and new grow to flowering. The trees that I have are French Lilac, Clematis (Jack Manny), and Dogwood (Cherokee Princess) As of the time of this review my trees will be on their third feeding, and they have done remarkably well. I will be ordering more of this product in the future and I would highly recommend Golden tree to my friends and family. One last note: I will up my review from 4 stars to 5 once i have had an opportunity to test Golden tree in a hydroponic setting, I would love the chance to do a side by side comparison to see any and all benefits. But for now, this product is pretty dam good, it saved alot of invested time and money in my ornamental trees and that means alot to me.
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Reviewed in the United States on May 29, 2016 by Lee Manseau
Size: 2 Ounce
Lasts a while. The concentration smells very potent. The smell does dissipate after diluting with water. My plants are booming. Fruiting plants flowered within a week and my date tree is flourishing
Reviewed in the United States on February 4, 2026 by Geraldine Walker