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Humboldts Secret

Humboldts Secret Flower Stacker – Best Flowering Formula for Bigger Harvests - Flowering Plant Food – Nutrient System for Potting Soil for Indoor & Outdoor Plants - 5 Gallons

    • Based on 2,606 reviews
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Returnable until Jan 31, 2025

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Availability: Only 5 left in stock, order soon!
Fulfilled by Amazon
Arrives Sunday, Mar 16
Order within 22 hours and 11 minutes
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Size: 5 Gallon


Features

  • INCREASE YIELDS BY UP TO 30%: Flower Stacker is a flowering additive designed to help your plants natural ability to increase yield and flower density. Its an ideal nutrient solution for potting soil for indoor plants and outdoor plants.
  • PREMIUM INGREDIENTS: Our Humboldts Secret Flower Stacker is made with quality ingredients to ensure the development of your flowers. Perfectly suited for potting soil for indoor plants!
  • CONTAINS VITAMIN B1: Vitamin B1 has been touted as a cure-all for transplant shock. Labels typically claim that B1 supports conditions for better plant establishment and growth in a wide range of plants.
  • HIGH AMOUNTS OF PHOSPHORUS AND POTASSIUM: Application of phosphorus and potassium during the flower development phase improves soil/foliar nutrient conditions for better crop yields.
  • ADDED FLOWERING AGENT TO YOUR REGIME: Flowering boosters are particularly important in hydroponic and agricultural industries. Thousands of growers use Flower Stacker as an additional flowering agent to maximize their yields by harnessing the power of our clean-running formula.

Brand: Humboldts Secret


Item Weight: 8 Ounces


Item Form: Liquid


Coverage: 30


Liquid Volume: 5 Gallons


Brand: Humboldts Secret


Item Weight: 8 Ounces


Item Form: Liquid


Coverage: 30


Liquid Volume: 5 Gallons


Specific Uses For Product: Hydroponic,Plant Food


Target Species: flowering plants


Manufacturer: HS Supplies LLC


UPC: 089902782634


Unit Count: 640 Fl Oz


Package Dimensions: 15.2 x 14 x 9.5 inches


Item Weight: 8 ounces


Is Discontinued By Manufacturer: No


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Sunday, Mar 16

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.

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Top Amazon Reviews

    • Humboldts Secret Flower Stacker
Size: 8 Ounce
Humboldts Secret Flower Stacker is an amazing product for anyone looking to enhance their plant’s flowering stage. After using it on my indoor and outdoor plants, I noticed bigger, healthier blooms within a short time. It's easy to use, and the concentrated formula goes a long way. My plants have never looked better, and I’ve seen an increase in yield. A must-have for gardeners seeking more abundant harvests! ... show more
Reviewed in the United States on October 10, 2024 by John
    • Works great
Size: 8 Ounce
My plants love this fertilizer
Reviewed in the United States on October 3, 2024 by Stuart
    • Fertilizer
Size: 32 Ounce
Works as expected.
Reviewed in the United States on August 16, 2024 by Denise
    • Worked Well
Size: 32 Ounce
Review Image by LindaBJohnson LindaBJohnson
Cannabis plants in tower garden (hydro/aeroponic) were not progressing at the end of the grow period until we used this (possibly due to reduced sun exposure). Flower Stacker did improve the buds! Much happier with the crop than we expected to be.
Reviewed in the United States on November 25, 2024 by LindaBJohnson LindaBJohnson
    • Good
Size: 32 Ounce
This stuff works
Reviewed in the United States on September 1, 2024 by Tatyiana Baines
    • Good
Size: 8 Ounce
This stuff seems to work great. Good nutrient for blooms Would buy again
Reviewed in the United States on July 27, 2024 by kyle
    • super concentrate
Size: 32 Ounce
Haven't used yet am looking forward to. Directions on container to small to read with 150 readers and magnify glass. My spouse with progressive lens glasses and magnifier thinks she read correctly. Having to convert ml to ounces normally not an issue however having to measure a 1/4 tsp. for a gallon wasn't easy pouring from a .924 liter container to a teaspoon. I guess I could have spent the day looking for a 1/4" tsp. Nevertheless explicit warnings of accurate. measurement, timing of 3 weeks after flower bloom, to apply 1st dose is scary with all the warnings about plant burn out. We'll see how it goes. ... show more
Reviewed in the United States on November 20, 2024 by Namrto
    • Wow
Size: 8 Ounce
This was my first time using nutrients in my garden, I had a pretty great turn out of tomatoes last year. It’s easy to use, crop tastes amazing, and it’s worth the money.
Reviewed in the United States on March 2, 2024 by Shay

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