Micronized Soft Rock Phosphate 0-9-0 (Cal-Phos)
High Phosphorus • Strong Roots • Enhanced Bloom Support
Our Micronized Soft Rock Phosphate, also known as Cal-Phos or Colloidal Phosphate, is derived from the fossilized remains of ancient organic life. Mined and processed in Canada, this natural, non-metallic mineral is rich in phosphorus, calcium, and trace minerals essential for strong root systems, vibrant blooms, and long-term soil fertility.
Key Benefits
🌱 Boosts Germination & Root Growth
Provides essential phosphorus and calcium to support early plant development and stronger root systems.
💧 Improves Nutrient Movement
Helps translocate vital minerals into plant tissues, promoting healthier, more resilient growth.
⚡ Highly Refined & Water-Soluble
Processed to a fine particle size under 10 microns for faster availability to plants.
💦 Ideal for Foliar & Soil Applications
Can be suspended in water for foliar sprays or applied directly to soil for quicker nutrient uptake.
🌸 Supports Bloom & Fruit Development
Acts as a natural bloom booster, increasing flower and fruit production without harsh chemical inputs.
Application Guidance
Application rates will vary depending on your soil’s nutrient levels. Always base application amounts on a current soil analysis. When using this product as a foliar spray, exercise caution to avoid potential crop damage. Perform a small test patch before full application.
Application Rates
Garden & Soil Drench
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Apply 1–4 grams per 10 m² (100 ft²).
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Mix with water and apply to soil surface with continuous agitation to keep product suspended.
Bloom Booster
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Use 0.25–0.5 grams per 4 L (1 gallon) of growing media.
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For bulk soil mixing, add 50–100 grams per cubic yard (27 cu ft).
Foliar Spray
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Apply 1–4 grams per 10 m² (100 ft²).
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Mix with water and spray evenly over foliage. Keep solution agitated to maintain suspension.
Broadacre, Orchards & Vineyards
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Seed Treatment: 20 grams per bushel of seed with microbial inoculants.
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Foliar Spray: 2 lbs per acre.
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Soil Application: 50–100 lbs per acre.
Guaranteed Analysis
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Available Phosphoric Acid (P₂O₅): 9%
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Total Phosphoric Acid (P₂O₅): 18%
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Calcium (Ca): 20%

This product complies with Canada’s Organic Production Systems General Principles & Management Standards and Permitted Substances Lists (CAN/CGSB-32.310-2021 CAN/CGSB-32.311-2020) Cadmium shall not exceed 90 mg/kg P2O5.