--- product_id: 164619758 title: "Humboldts Secret Tree Trunk, Potassium Silicate Additive, 1 Gallon" brand: "humboldts secret" price: "€ 182.43" currency: EUR in_stock: true category: "Humboldts Secret" url: https://www.desertcart.pt/products/164619758-humboldts-secret-tree-trunk-potassium-silicate-additive-1-gallon store_origin: PT region: Portugal --- # Potassium silicate additive for plant strength Compatible with soil, coco & hydroponics Thicker stalks & stronger branches Humboldts Secret Tree Trunk, Potassium Silicate Additive, 1 Gallon **Brand:** humboldts secret **Price:** € 182.43 **Availability:** βœ… In Stock ## Summary > 🌱 Grow Strong, Stand Tall β€” The Secret to Unshakable Plants! ## Quick Answers - **What is this?** Humboldts Secret Tree Trunk, Potassium Silicate Additive, 1 Gallon by humboldts secret - **How much does it cost?** € 182.43 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/164619758-humboldts-secret-tree-trunk-potassium-silicate-additive-1-gallon) ## 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 - β€’ **Boost Growth & Resilience:** Enhances natural growth processes to help plants thrive indoors or outdoors across all mediums. - β€’ **Maximize Your Yield Potential:** Supports heavier flowers and fruits by improving nutrient uptake and plant architecture. - β€’ **Fortify Your Plants from the Core:** Premium silicate formula thickens stalks and strengthens branches for unbeatable plant stability. - β€’ **Trusted by Thousands of Gardeners:** Made in the USA with consistent, reliable results that elevate your garden’s performance. - β€’ **Effortless Integration into Any Grow Cycle:** Easy-to-use liquid additive, just 2.5–5 mL per gallon with every watering for continuous strength. ## Overview Humboldts Secret Tree Trunk is a premium potassium silicate liquid fertilizer designed to fortify plant cell walls, resulting in thicker stalks, stronger branches, and enhanced stress resistance. Suitable for indoor and outdoor use, it supports all growing mediums including soil, coco, and hydroponics. Trusted by thousands of gardeners, this 1-gallon additive boosts nutrient uptake and maximizes yield potential throughout every growth stage. ## Description desertcart.com : Humboldts Secret Tree Trunk, Potassium Silicate Additive, 1 Gallon | Liquid Fertilizer, Thicker Stalks, Stress Resistance & Branch Development, Indoor & Outdoor Plants, Soil, Coco & Hydroponics : Patio, Lawn & Garden ## Features - Packaging Update: You may receive previous or updated packaging during our transition. Same formula, same performance. Plant Strength & Stability - Humboldts Secret Tree Trunk is a premium silicate additive that fortifies plant cell walls, producing thicker stalks and stronger branches. By supporting heavier flowers and fruit, it enhances stability, improves overall plant health, and helps maximize yield potential in any growing environment. - Enhanced Growth Performance: This silica for plants provides advanced nutrients that improve stem structure and boost resilience. By strengthening natural growth processes, it helps indoor and outdoor plants thrive in soil, coco, or hydroponic systems while delivering vigorous, healthy development across every growth stage. - Thicker Stalks & Better Branching: Tree Trunk liquid fertilizer supports stronger nutrient uptake, encouraging sturdy stalks and abundant branch development. This results in improved architecture, better nutrient flow, and increased capacity to support heavy flowers and fruits through both vegetative and flowering cycles. - Trusted by Gardeners Everywhere: Humboldts Secret Nutrients are made in the USA with premium-quality ingredients trusted by hundreds of thousands of gardeners. Known for delivering consistent, reliable results, this formula strengthens plants, promotes stable yields, and ensures lasting performance in both indoor and outdoor gardens. - Versatile & Easy to Use: Derived from potassium silicate, this liquid silica for plants is compatible with all grow mediums including soil, coco, and hydroponics. Simply apply 2.5–5 ml per gallon (5 ml β‰ˆ 1 teaspoon) with every or every other watering to boost plant strength throughout the entire grow cycle. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07523V87L | | Best Sellers Rank | #52,625 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #1,130 in Garden Fertilizers | | Brand Name | Humboldts Secret | | Coverage | Medium | | Customer Reviews | 4.6 4.6 out of 5 stars (883) | | Global Trade Identification Number | 00706199757151 | | Item Form | Liquid | | Item Highlight | Liquid Fertilizer, Thicker Stalks, Stress Resistance & Branch Development, Indoor & Outdoor Plants, Soil, Coco & Hydroponics | | Item Weight | 8 pounds | | Liquid Volume | 128 fluid ounces | | Manufacturer | Humboldts Secret | | Mixing Ratio | 2.5-5 mL per gallon | | Model Number | 706199757144 | | Number of Items | 1 | | Specific Uses For Product | Hydroponic,Plant Food | | Target Species | plants | | UPC | 706199757151 | | Unit Count | 128 Fluid Ounces | ## Product Details - **Brand:** Humboldts Secret - **Item Form:** Liquid - **Item Weight:** 8 pounds - **Liquid Volume:** 128 fluid ounces - **Specific Uses For Product:** Hydroponic,Plant Food ## Images ![Humboldts Secret Tree Trunk, Potassium Silicate Additive, 1 Gallon - Image 1](https://m.media-amazon.com/images/I/41kFLapV6nL.jpg) ![Humboldts Secret Tree Trunk, Potassium Silicate Additive, 1 Gallon - Image 2](https://m.media-amazon.com/images/I/41VET5dU+hL.jpg) ![Humboldts Secret Tree Trunk, Potassium Silicate Additive, 1 Gallon - Image 3](https://m.media-amazon.com/images/I/51ITs9jOHML.jpg) ![Humboldts Secret Tree Trunk, Potassium Silicate Additive, 1 Gallon - Image 4](https://m.media-amazon.com/images/I/51Zm8zfx2HL.jpg) ![Humboldts Secret Tree Trunk, Potassium Silicate Additive, 1 Gallon - Image 5](https://m.media-amazon.com/images/I/511-PkJq4+L.jpg) ## Available Options This product comes in different **Size** options. --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.pt/products/164619758-humboldts-secret-tree-trunk-potassium-silicate-additive-1-gallon](https://www.desertcart.pt/products/164619758-humboldts-secret-tree-trunk-potassium-silicate-additive-1-gallon) --- *Product available on Desertcart Portugal* *Store origin: PT* *Last updated: 2026-10-07*