--- product_id: 32343221 title: "Flower Stacker | 0-7-5 Bloom Booster with Vitamin B1 | High Phosphorus Potassium Flowering Nutrients | Potting Soil Hydroponics Coco | Indoor & Outdoor Plants | 32 Ounce" brand: "humboldts secret" price: "AR$139456" currency: ARS in_stock: true reviews_count: 8 url: https://www.desertcart.com.ar/products/32343221-flower-stacker-0-7-5-bloom-booster-with-vitamin-b1 store_origin: AR region: Argentina --- # Vitamin B1 boosts stress resilience 0-7-5 NPK for peak bloom pH stable, clean running formula Flower Stacker | 0-7-5 Bloom Booster with Vitamin B1 | High Phosphorus Potassium Flowering Nutrients | Potting Soil Hydroponics Coco | Indoor & Outdoor Plants | 32 Ounce **Brand:** humboldts secret **Price:** AR$139456 **Availability:** ✅ In Stock ## Summary > 🌸 Unlock your garden’s full bloom potential with science-backed power! ## Quick Answers - **What is this?** Flower Stacker | 0-7-5 Bloom Booster with Vitamin B1 | High Phosphorus Potassium Flowering Nutrients | Potting Soil Hydroponics Coco | Indoor & Outdoor Plants | 32 Ounce by humboldts secret - **How much does it cost?** AR$139456 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.com.ar](https://www.desertcart.com.ar/products/32343221-flower-stacker-0-7-5-bloom-booster-with-vitamin-b1) ## Best For - humboldts secret enthusiasts ## Why This Product - Trusted humboldts secret brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Effortless Application:** Mixes fast, stays pH stable, and prevents clogging in soil, coco, hydro, or aquaponics. - • **Stress-Proof Your Plants:** Vitamin B1 supports transplant recovery and helps plants thrive under heat and light stress. - • **Precision Bloom Nutrition:** High phosphorus & potassium fuel rapid bud growth and enhanced resin production. - • **30% Bigger, Denser Harvests:** Maximize yields with tighter nodes and richer flower sites indoors or out. - • **Flexible Dosing for Any Scale:** 32 oz covers 118-940 gallons, perfect for any grow method or plant count. ## Overview Humboldts Secret Flower Stacker is a professional-grade 0-7-5 liquid bloom booster enriched with Vitamin B1, designed to increase flower density and yield by up to 30%. Compatible with soil, coco, hydroponics, and aquaponics, it delivers precise phosphorus and potassium nutrition during bloom, supports plant stress resilience, and ensures clean, pH-stable feeding for indoor and outdoor plants. ## Description Clear directions and consistent quality, no guesswork. Trusted by gardeners for over 10 years. Professional-grade plant nutrition, simple and consistent, from indoor plants to outdoor gardens. Humboldts Secret was created by gardeners, for gardeners, with a simple goal, make high-quality plant nutrients affordable and easy to use, so more people can grow with confidence. Humboldts Secret products are made with carefully selected ingredients and manufactured in our California facility, for consistent quality you can count on. We make plant nutrition simpler, clearer, and easier to follow, so gardeners can spend less time guessing and more time growing. Starter Kit Flower Stacker Base A & B Golden Tree Plant Enzymes CalMag & Iron Sweet & Sticky ## Features - Packaging Update: You may receive previous or updated packaging during our transition. Same formula, same performance. Bigger Denser Harvests: Our humboldts secret flower stacker 0 7 5 bloom additive helps plants increase yields by up to 30%, building tighter nodes and denser flower sites on indoor and outdoor plants in potting soil for standout aroma, rich color, and reliable bag appeal across every cycle. - Peak Bloom Nutrition: This concentrated flowering fertilizer delivers high phosphorus and potassium exactly during the bloom window to drive rapid bud formation, fuller calyx stacking, and enhanced resin and essential oils while supporting efficient nutrient uptake and balanced plant metabolism. - Simple Clean Application: Begin in week 3 of flower and use with every or every other watering; this dependable flower booster mixes fast, stays pH stable, and runs clean in soil, coco, hydroponics, and aquaponics, preventing buildup, line clogging, and downtime so your schedule stays consistent. - Stronger Stress Resilience: Our balanced flowering nutrients include Vitamin B1 to support transplant recovery, early establishment, and overall vigor, helping plants handle training, heat, and light intensity swings with confidence for a fuller, more uniform canopy from top to bottom. - Flexible Dosing And Compatibility: Designed to pair seamlessly with humboldt secret nutrients, the 32 ounce bottle mixes approximately 118 to 940 gallons depending on dilution, giving precise control for any plant count and grow method while preserving clean reservoirs and predictable results. ## Technical Specifications | Specification | Value | |---------------|-------| | Asin | B01DIAWP1U | | Best Sellers Rank | #16,729 in Patio, Lawn & Garden (See Top 100 in Patio, Lawn & Garden) #504 in Garden Fertilizers | | Brand Name | Humboldts Secret | | Coverage | 30 | | Customer Reviews | 4.6 4.6 out of 5 stars (2,724) 4.6 out of 5 stars | | Item Form | Liquid | | Item Weight | 32 Ounces | | Liquid Volume | 32 Fluid Ounces | | Manufacturer | Humboldts Secret | | Part Number | 4316245519 | | Specific Uses For Product | Hydroponic,Plant Food | | Target Species | Plants | | Unit Count | 32.0 Fluid Ounces | | Upc | 089902782559 | ## Product Details - **Brand:** Humboldts Secret - **Item Weight:** 32 Ounces - **Item Form:** Liquid - **Liquid Volume:** 32 Fluid Ounces - **Specific Uses For Product:** Hydroponic,Plant Food ## Images ![Flower Stacker | 0-7-5 Bloom Booster with Vitamin B1 | High Phosphorus Potassium Flowering Nutrients | Potting Soil Hydroponics Coco | Indoor & Outdoor Plants | 32 Ounce - Image 1](https://m.media-amazon.com/images/I/71sKpdVjY+L.jpg) ## Available Options This product comes in different **Size** options. ## Questions & Answers **Q: what's in it?** A: Phosphate, soluble potash, vitamin b-1 **Q: Is this product organic** A: Hi, this would not be considered an organic product. **Q: would this work on cannabis** A: Works great for cannabis. Just follow the instructions I grow in 5 gallon hydroponic pots. I start adding flower stacker the 1st sign of buds. If you add too much to start it will burn and stunt your plants. **Q: can this be used with Bud Candy and micro chum from?** A: Yes, just be cautious as Flower Stacker is very concentrated ## Customer Reviews ### ⭐⭐⭐⭐⭐ love *by on Reviewed in the United States February 12, 2026* This Bloom Booster with Vitamin B1 is fantastic! It’s helped my plants produce stronger blooms and healthier foliage—everything looks more vibrant and lush. The added Vitamin B1 seems to reduce transplant shock and supports overall plant vigor, especially when introducing new plants to the garden.It’s easy to mix and apply with my watering routine, and I’ve noticed that flowers stay fuller and more abundant throughout the season. The formula feels high‑quality and effective without being overly complex.If you want a reliable way to promote better flowering and stronger, healthier plants, this bloom booster is an excellent choice. Highly recommend! ### ⭐⭐⭐⭐⭐ Hugely successful grows with Humboldt's Secret *by on Reviewed in the United States January 20, 2026* 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. ### ⭐⭐⭐⭐ Humboldt Sweet and Sticky and Stacker work really well together. *by on Reviewed in the United States January 1, 2021* Daddy like!How is this evening happening? These pictures were taken January 1,2021 and according to my wife are about 11 weeks old. For the last three or four weeks the daytime high temperature has 68°. And at night of about 45° . And the plants seem to love it.Look how tight the bud blossoms are, it’s like one big forearm. I will bring it in soon put it under my grow lights and see how it likes that environment. The temperature is a low of about 65°F, and a high of 75°F. It’s flowing season here with 12 hour days similar to what the bud was getting outdoors.I will use flowers shield Humboldt flower shield to get any pest or mites or anything that might be on it off of it before I bring it inside grow roomAlso in the garden we have passion fruit that is 35’ long by 12’ wide. It took over a clothes line and outdoor clothes away but I put number 10 copper wire honored to support the passion fruit tree. We have a minature orange trees to produces grap fruit sized oranges when it wants to. The lime trees love the sweet and sticky as well. I want to see how good they’re going to taste. Ever fruit tree loves Miracle grow to grow foliage nice and green the fruit as well but that was in the summer. should’ve taken a picture of it I have a lot of little baby lemons and I limes. Once the flowers turn into small fruit the trees get Humboldt stacker. We harvest passion fruit pretty much every few days for a couple of months or longer. I forgot I started with a 4 ounce bottle of the stacker and sweet and sticky by Humboldt. For my cannabis plant growing indoors just a couple of plants. And I realized I started buying the larger bottles because it makes our fruit trees produce really delicious fruit. It might seem like a lot of money at first but the stuff is very concentrated and it goes along way.Our passion fruit already has blossoms were still using miracle grow. I still have Humboldt stacker and sweet and sticky for this year I’ll probably buy some more because it’s worth it it’s very concentrated. ## Frequently Bought Together - Humboldts Secret Flower Stacker – Best Flowering Formula for Bigger Harvests - Flowering Plant Food - Nutrient System for Potting Soil for Indoor Plants & Outdoor Plants - 1 Quart - Humboldts Secret Sweet & Sticky – Carbohydrate and Saccharide Energy Source – Enhance Aroma and Flavor of Plants – Potting Soil for Indoor Plants – Energy for Plants – 32 Ounces - Humboldts Secret Golden Tree: Best Plant Food for Plants & Trees - All-in-One Concentrated Additive - Vegetables, Flowers, Fruits, Lawns, Roses, Tomatoes & More (16 Ounce) --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.com.ar/products/32343221-flower-stacker-0-7-5-bloom-booster-with-vitamin-b1](https://www.desertcart.com.ar/products/32343221-flower-stacker-0-7-5-bloom-booster-with-vitamin-b1) --- *Product available on Desertcart Argentina* *Store origin: AR* *Last updated: 2026-07-10*