Newmarket, Ontario (Head Office)
1175 Stellar Drive, Unit #5
Newmarket, ON L3Y 7B8
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$0.00 CAD
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PowerSI Bloom by Power SI is a premium flower additive and flowering additive designed to support flowering onset, crop quality, and a smoother finish during the bloom cycle. Built around a proprietary silica matrix and plant-extract inputs, it’s made for growers who want a focused flowering enhancer that stays simple and consistent.
PowerSI Bloom is created by combining a proprietary silica matrix with a proprietary mix of plant extracts through a fermentation process. That fermentation process is intended to create an entourage effect that shows up quickly in the garden, supporting better yields and crop quality without turning your program into a complicated routine. The result is a quality-enhancing flowering additive that’s positioned for noticeable performance in the flowering window, with benefits aimed at how the plant allocates energy and builds structure as buds and flowers develop.
On the plant side, PowerSI Bloom is featured for better flowering onset and for promoting increased flower sites, supporting a fuller, more productive canopy during bloom. It’s also described for helping increase homogenous ripening, which matters when you value a more even finish across the plant. Alongside those timing benefits, enhanced protein synthesis and promoted increased brix levels are highlighted as part of its bloom-focused performance profile, aligning with growers who prioritize plant function and end quality rather than chasing flashy claims.
For shoppers who want a compact facts layer, PowerSI Bloom includes soluble silicon (si) derived from potassium silicate, and it carries a light 1-2-0.5 NPK profile. The formulation is built from inputs that include urea, phosphoric acid, potassium silicate, and seaweed extract (Ascophyllum nodosum), with boron and zinc sources also listed as part of the analysis. Those components keep the product clearly positioned as a silica-forward flowering additive with additional supportive elements aimed at bloom performance and finish quality.
PowerSI Bloom is a good fit for growers looking for a premium flower additive that brings together soluble silicon, a fermentation process, and plant-extract support for better flowering onset, increased flower sites, and more homogenous ripening. If your goal is a quality-enhancing flowering additive that supports bloom timing, plant function, and crop quality, this is a clean match for the flowering stage.
Step-by-step mixing and feeding instructions for Power Si Bloom - 1 Litre.
Fill your reservoir or watering container with clean, room-temperature water first. Shake the bottle of Power Si Bloom - 1 Litre 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 — Power Si Bloom
Flowering stage — Power Si Bloom
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.
| Total Nitrogen (N) | 1.0% |
|---|---|
| Urea Nitrogen (N) | 0.8% |
| Available Phosphate (P2O5) | 2.0% |
| Soluble Potash (K2O) | 0.5% |
| Boron (B) | 0.007% |
| Zinc (Zn) | 0.3% |
| Soluble Silicon (Si) | 0.66% |
Available Phosphate (P₂O₅) supports root development, energy transfer, and early structural growth by providing a form of phosphorus that plants can absorb and use quickly.
Boric acid supplies boron, which plants need in extremely small amounts to build healthy new growth and support flowering and fruit development, but the safe range is very narrow. It’s unique because deficiency shows up first in the newest tissues while excess often burns older leaf edges, so accurate diagnosis and tiny, careful corrections matter more than with most nutrients.
Boron is essential because it stabilizes cell walls, supports root and shoot growth, and regulates sugar movement throughout the plant. What makes boron unique is its limited mobility and extremely narrow range between deficiency and excess, which causes new growth to show symptoms rapidly when levels fall out of balance.
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.
Soluble silicon is important because it strengthens plant tissues and improves stress tolerance, helping plants stay upright, conserve water better during heat or drought, and handle disease and pest pressure more effectively. It’s unique from most nutrients because it doesn’t mainly “feed” growth directly; it helps plants protect and reinforce the growth they’re already building.
Total Nitrogen is important because it directly drives leafy growth, chlorophyll production, and overall growth speed, which sets the pace for the entire plant. It’s unique because the “total” number can include different nitrogen forms that behave differently in the root zone, meaning the same total amount can produce very different results depending on the nitrogen type and plant stage.
Urea nitrogen is important because it can supply a high-impact source of nitrogen that supports chlorophyll production and fast leafy growth, but it’s unique from other nitrogen forms because it usually must convert in the growing environment before roots can use it consistently, making correct application and conditions critical for avoiding loss, burn, or sudden imbalance.
Zinc is important because it powers key enzymes and helps regulate growth hormones, which directly controls healthy new leaves, normal internode spacing, and strong growth tips; it’s unique compared to many other micronutrients because zinc problems often show up as distorted, undersized new growth and stunting, not just simple leaf yellowing.
Yes, it can if it pushes phosphorus too high or drives pH too low, because both conditions can reduce the plant’s ability to take up key micronutrients and calcium even when they’re present in the feed, which makes phosphoric acid uniquely powerful compared with slower, gentler phosphorus sources.
No, potassium hydroxide is mainly a strong pH-raising ingredient that changes how nutrients behave and how roots can access them, and its potassium addition is usually secondary. It’s important because stable pH prevents false deficiency symptoms and uptake stress, and it’s unique from other potassium sources because it’s used for acidity control rather than primarily for plant nutrition.
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.
Seaweed is mainly a plant booster because it supports roots, stress tolerance, and nutrient efficiency more than it supplies full nutrition. It’s unique because ocean-derived compounds help the root zone and plant growth signals in a gentle way, so plants often recover faster and grow more steadily when the basics are already covered.
Sodium molybdate supplies molybdenum, a trace micronutrient that helps plants convert nitrate nitrogen into usable building material, so growth and green color stay steady; it’s unique because it works as a tiny-dose “nitrogen unlocker” rather than a bulk nutrient.
Urea can burn plants because it must convert in the root zone, and that conversion can create a concentrated, temporarily harsh micro-zone that stresses roots, especially if urea is piled, left on the surface, or not watered in. That conversion step is what makes urea unique compared with nitrogen forms that are already plant-available, so correct placement and moisture are critical.
Zinc sulfate supplies plant-available zinc to quickly correct zinc deficiency, helping restore normal new leaf expansion and steady growth at the tips. It’s important because zinc is needed in tiny amounts but strongly affects growth regulation, and zinc sulfate is unique for its predictable solubility and fast correction compared to slower zinc sources.

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