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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Dutch Nutrient Hydro-Organic Gro is a 1-part completely soluble nutrient made for stand-alone plant nutrition in soil-less or soil media. It’s a stand-alone hydro organic nutrient and a complete organic nutrition base designed for steady, confident growth with a cleaner, simpler one-part approach.
As a one-part, completely soluble nutrient, Hydro-Organic Gro fits naturally into modern growing systems where consistency matters. The formula is described as being formulated to meet the nutritional requirements of plants, with a precise formulation of minerals required for optimal growth. That makes it a practical foundation when you want dependable growth support without turning your program into a multi-bottle puzzle.
This hydro-organic base is enriched with OMRI certified organics, which keeps it aligned with organic-minded gardens while staying straightforward in day-to-day operation. It’s also described as a non burning recipe, aimed at supporting healthier-looking growth without harsh swings. For growers who want calm, controlled development through the growth phase, that “non burning recipe” positioning is a key reason this product stands out.
Hydro-Organic Gro is made with a concentrated formula of amino acids, vitamins, humates, electrolytes, and major-minor-micro minerals. That compact facts layer matters because it explains the intent: broad-spectrum fertility for soil-less medium performance, with organic components that are described as supporting an increase in nutrient uptake. The formula is also described as helping increase beneficial bacteria in the growing medium, reinforcing a more active root-zone environment as plants develop.
Finish quality support is included in the product’s stated benefits, even though it’s a “Gro” base. Organic components are described as supporting a noticeable increase of essential oils and aromas, which can matter when you care about aromatic expression later in the cycle. The nutrient analysis is 8-2-3, presented as a potent NPK profile built for complete organic nutrition.
Dutch Nutrient Hydro-Organic Gro is suited for hydroponics, soil and coco. This is a good fit for growers who want a stand-alone hydro organic nutrient with complete organic nutrition, a 1-part completely soluble nutrient format, and growth-focused support built around nutrient uptake and beneficial bacteria in the growing medium.
Step-by-step mixing and feeding instructions for Dutch Nutrient Hydro-Organic Gro - 1 Litre.
Fill your reservoir or watering container with clean, room-temperature water first. Shake the bottle of Dutch Nutrient Hydro-Organic Gro - 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 — Hydro-Organic Gro
Flowering stage — Hydro-Organic Gro
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) | 8.0% |
|---|---|
| Ammoniacal Nitrogen (N) | 4.0% |
| Nitrate Nitrogen (N) | 1.6% |
| Water Soluble Nitrogen (N) | 2.4% |
| Available Phosphate (P2O5) | 2.0% |
| Available Potash (K2O) | 3.0% |
Ammoniacal Nitrogen (N) is a plant-available form of ammonium (NH₄⁺) that provides a steady, gentle source of nitrogen for healthy green growth. Unlike fast-release nitrogen types, ammoniacal nitrogen feeds plants slowly, helps stabilize root-zone pH, and works well in cooler temperatures. It is commonly used during early vegetative growth because it supports strong leaf development without burning young roots. If plants show pale leaves, slow growth, or weak stems, they may need more available ammoniacal nitrogen.
Ammonium hydroxide is important because it delivers immediately available ammonium nitrogen that can green plants up and drive fast vegetative growth, but it’s unique because it can shift pH quickly and change nutrient uptake balance, which is why too much can cause burn, lockout, or calcium and magnesium issues even when those nutrients are present.
Ammonium nitrate is unique because it provides nitrogen in two plant-usable forms at once, which can give a fast green-up while still supporting steadier uptake depending on the root-zone conditions. That matters because it can correct true nitrogen shortages quickly, but it also needs careful balance since too much can push overly soft growth and trigger pH drift and nutrient imbalances.
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.
Available Potash (K₂O) supports strong growth by improving water movement, strengthening plant cells, regulating sugar transport, and helping plants handle stress, making it essential for overall plant health and resilience.
Bat guano is different because it can deliver a noticeable nutrient boost while also feeding the soil microbes that release and cycle nutrients around roots, so plants often respond with stronger green growth or heavier flowering faster than with many other natural amendments. It’s important because its concentration means a small dose can shift plant performance quickly, and that same strength is what makes it unique and worth using carefully for targeted results instead of constant feeding.
Citric acid helps improve nutrient availability by gently lowering pH and binding certain minerals so they stay more usable for roots, which can reduce common lockout symptoms like pale new growth. It’s unique because it influences nutrient behavior beyond pH alone, making it especially helpful when nutrients are present but not being absorbed efficiently.
Nitrate Nitrogen provides a stable, easy-to-absorb form of nitrogen that supports steady growth, strong foliage, and reliable plant development without sudden nutrient swings.
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.
Water-soluble nitrogen is important because it dissolves in water and becomes available to plants quickly, helping drive fast green growth, strong photosynthesis, and rapid recovery from nitrogen deficiency. It’s unique because it works immediately rather than relying on slow breakdown or conversion, so it delivers faster results—but also requires more careful control to avoid overfeeding, soft growth, or nutrient imbalance.
Kelp extract supports plant growth by acting as a biostimulant that helps roots stay active, improves stress tolerance, and encourages steadier new growth without functioning like a heavy fertilizer. It’s unique because it influences plant processes and recovery more than it supplies major nutrients, so it works best as supportive “management help” rather than a direct N-P-K replacement.
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.
Protein hydrolysate supplies fast-acting amino acids and short peptides that support root development, nutrient efficiency, and stress recovery without acting like a standard fertilizer. It’s unique because the peptide fraction can influence plant signaling and resilience, so the benefit is often steadier growth and quicker bounce-back rather than a simple “more nutrients” effect.
Sea bird guano is often better for fast growth because it can release plant-available nutrients quicker than many other organic amendments while still supporting root-zone biology, but that speed is exactly what makes it different and easy to overuse. Used lightly, it can correct mild hunger and energize growth; used too heavily, it can cause dark clawed leaves, tip burn, and nutrient lockouts that slower organics are less likely to trigger.

It's hard to find a good 1part organic grow nutrient that is safe for hydroponic systems. I was happy when I was recommended this as I don't like having to deal with the a + b grow formulas where you have to mix multiple bottles.
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