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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 Plants & Outdoor Plants - 8 Ounce

  • Based on 2,639 reviews
Condition: New
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Availability: In Stock.
Fulfilled by Amazon
Arrives Saturday, Jun 28
Order within 23 hours and 23 minutes
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Size: 8 Ounce


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: Powder


Coverage: Medium


Liquid Volume: 8 Fluid Ounces


Brand: Humboldts Secret


Item Weight: 8 Ounces


Item Form: Powder


Coverage: Medium


Liquid Volume: 8 Fluid Ounces


Specific Uses For Product: Hydroponic,Plant Food,Potting


Target Species: Flowering or fruiting plants or trees


Manufacturer: Humboldts Secret


UPC: 089902782573


Unit Count: 8.0 Ounce


Product Dimensions: 2 x 2 x 7 inches


Item Weight: 8 ounces


Item model number: 4316245903


Is Discontinued By Manufacturer: No


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Saturday, Jun 28

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 Verified Amazon User
    • Great product!
Size: 8 Ounce
Great supplement for your buds!
Reviewed in the United States on February 9, 2025 by Bobby L.
    • I think it helps.
Size: 32 Ounce
Hard to say how much difference it makes because it's not the only ingredient I use. But I am convinced that it is beneficial to the process.
Reviewed in the United States on November 18, 2024 by J. H. Cox
    • Humboldts secret flower stacker is worth every penny
Size: 32 Ounce
My lemon tree growth rate increased tremendously when I added Humboldts secret flower stacker to my current nutrients & the health of my lemon tree increased in a matter of days it’s functionality is like no other
Reviewed in the United States on March 5, 2025 by Kenneth L.
    • Easy to use
Size: 32 Ounce
Growing for years used every line of nutrients this is top 2 for use and yield
Reviewed in the United States on March 29, 2025 by AnnMarie Schans
    • Great results
Size: 32 Ounce
Will use again
Reviewed in the United States on February 6, 2025 by Milton b hartung
    • Great product
Size: 8 Ounce
It shows signs of working within two days after first use.
Reviewed in the United States on January 14, 2025 by Todd W.
    • 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

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