Newmarket, Ontario (Head Office)
1175 Stellar Drive, Unit #5
Newmarket, ON L3Y 7B8
- Mon10:00am–6:00pm
- Tue10:00am–6:00pm
- Wed10:00am–6:00pm
- Thu10:00am–6:00pm
- Fri10:00am–6:00pm
- Sat10:00am–4:00pm
- SunClosed
$0.00 CAD
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Emerald Harvest Sturdy Stalk is a potassium silicate supplement that supports sturdier plant structure and crop resilience when flowers and fruits get heavy. This potassium silicate supplement is also a silica supplement for growers who want stronger stems and more dependable support as plants become top-heavy.
Sturdy Stalk is designed to strengthen plant cell walls so crops can support heavier harvests and better endure environmental stressors. By helping create thicker and more rigid plant cell walls, it supports sturdier plants that stand up better through challenging conditions, including wind and rain. Emerald Harvest also positions this added internal strength as a way to help plants stay productive, supporting more prolific budding, flowering and yields when the canopy is carrying more weight.
The key ingredient in Sturdy Stalk is silica, delivered as soluble silicon derived from potassium silicate. This approach is meant to fortify the internal structures plants need to support top-heavy plants laden with flowers and fruits, while also bringing additional bloom-boosting potassium into the program. For a compact facts layer, Sturdy Stalk is rated 0-0-1, reinforcing that it’s a structural-support additive with a small potassium contribution rather than a full base nutrient.
Sturdy Stalk is often relevant during the crucial stages of the crop life cycle when fruits and flowers are putting on weight, especially in hydroponic gardens where silicon may be limited compared to mineral-rich outdoor soils. Emerald Harvest describes thicker cell walls as harder to pierce and penetrate, and also frames the product as supporting overall crop resilience by helping plants better withstand outside pressures that can sap performance.
With a stated shelf life of 10 years or more, Emerald Harvest Sturdy Stalk is a solid fit for growers who want a long-lasting potassium silicate supplement that reinforces plant structure, supports heavier harvests, and promotes sturdier plants during demanding flowering and fruiting periods.
Step-by-step mixing and feeding instructions for Emerald Harvest Sturdy Stalk - 6 Gallon.
Fill your reservoir or watering container with clean, room-temperature water first. Shake the bottle of Emerald Harvest Sturdy Stalk - 6 Gallon well before every use. Using the feeding schedule below, measure the recommended dose and add it directly to the water while stirring. Allow the solution to mix fully before adding any other fertilizers, additives, or supplements.
Always add nutrients to water — not the other way around. Mix thoroughly between products to ensure an even, stable nutrient solution.
Vegetative stage — Sturdy Stalk
Flowering stage — Sturdy Stalk
Warning – Important Safety Information
This product may cause mild skin irritation and eye irritation. Avoid unnecessary contact with skin, eyes, and clothing. Use only as directed.
General safety precautions
Read and follow all instructions on the product label and any accompanying documentation before use. Keep out of reach of children and pets. Do not ingest. Avoid breathing vapours, mist, or dust that may be generated during handling or use.
Wear appropriate personal protective equipment (PPE), such as protective gloves, long sleeves, long pants and closed-toe footwear. When there is a risk of splashing or airborne particles, use safety glasses or other suitable eye and face protection.
First aid – skin contact
IF ON SKIN OR HAIR: Remove contaminated clothing immediately. Rinse skin with clean water for several minutes, then wash with mild soap and water. If irritation or redness develops and persists, seek medical attention. Wash contaminated clothing before reuse.
First aid – eye contact
IF IN EYES: Rinse cautiously with clean water for several minutes, keeping eyelids open. Remove contact lenses if present and easy to do. Continue rinsing. If irritation persists, obtain medical advice.
First aid – ingestion and inhalation
IF SWALLOWED: Rinse mouth thoroughly with water. Do not induce vomiting unless instructed by a medical professional. Seek medical attention if you feel unwell.
IF INHALED: Move the person to fresh air and keep them comfortable for breathing. If coughing, breathing difficulty, dizziness or other symptoms occur, seek medical assistance.
Storage and handling
Store this product in its original closed container, in a cool, dry and well-ventilated area. Protect from extreme temperatures and direct sunlight. Keep container tightly sealed when not in use.
Avoid release to drains, natural waterways or outdoor soil. Dispose of unused product and empty containers in accordance with local regulations and the directions on the label.
Important: If medical advice is needed, keep the product label or container available. Always follow the specific instructions and safety recommendations provided by the manufacturer. This safety notice is intended as general guidance and does not replace official label directions or documentation.
| Soluble Potash (K2O) | 1.0% |
|---|---|
| Water Soluble Potassium (K) | 0.8% |
| Silica (SiO2) | 11.2% |
Silica helps plants build tougher stems and leaf tissues, improving posture and stress tolerance so plants handle heat, dryness, and physical pressure more reliably. It’s unique because it strengthens plant structure and resilience rather than directly “feeding” growth like most nutrients do.
Soluble potash (K2O) is important because it helps plants control water use, move sugars to new growth and fruit, and build stronger, higher-quality structure under stress. It’s unique from many other nutrients because it acts more like a regulator and transport helper than a direct “building material,” so the biggest benefits show up as steadier growth, stronger stems, and better finishing instead of just bigger leaves.
Water soluble potassium is important because it helps plants quickly control water balance, move sugars to flowers and fruit, and build stronger stems during high-demand growth stages. It’s unique from many other nutrients because it acts like a regulator for plant function and stress response rather than mainly serving as a building block for plant tissues.
Potassium silicate is mainly used for silicon, because the silicate portion helps plants build tougher tissues and handle stress better, while the potassium is usually a secondary contribution. It’s unique because it can improve plant structure while also strongly raising root-zone pH, so it needs more care than most similar inputs.

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