Dolomite Lime (Coarse)
Raises Soil pH • Adds Calcium & Magnesium • Improves Soil Structure
Our Coarse Dolomite Lime is a crushed form of dolomitic limestone (calcium and magnesium carbonate), providing the same soil benefits as our powdered and granulated options in a slow-release, coarse texture.
Ideal for gardens, lawns, raised beds, and bulk soil applications, it helps correct acidic soils, improve nutrient availability, and support strong root development over time.
🌿 Key Benefits
- Raises acidic soil pH toward the optimal 6.0–7.0 range
- Supplies calcium (20%) and magnesium (10%)
- Enhances nutrient availability and soil structure
- Supports microbial activity and long-term soil health
- Suitable for soil blending, field application, or topdressing
🌱 Application Guidelines
General Maintenance:
Apply 400–600 g per 10 m² (1–1.5 lbs per 100 ft²) for routine pH maintenance.
Moderately Acidic Soils (pH 5.5–6.0):
Apply 600–1,000 g per 10 m² (1.5–2 lbs per 100 ft²).
Highly Acidic Soils (pH below 5.5):
Apply up to 1,500 g per 10 m² (3 lbs per 100 ft²). For best results, apply in split applications spaced several weeks apart.
Soil Testing:
For precise pH correction, soil testing is recommended to determine exact lime requirements based on soil texture, buffering capacity (CEC), and existing nutrient levels.
Application Rate Guide
| Use Case | Rate |
|---|---|
| Maintenance | 400–600 g per 10 m² (1–1.5 lbs per 100 ft²) |
| Moderate Acidity | 600–1,000 g per 10 m² (1.5–2 lbs per 100 ft²) |
| High Acidity | Up to 1,500 g per 10 m² (3 lbs per 100 ft²) |
🚜 Application Methods
-
Gardens, Lawns & Raised Beds:
Evenly broadcast and incorporate into the top 10–15 cm (4–6 inches) of soil where possible. -
Field & Large-Scale Use:
Apply using a broadcast or drop spreader for uniform coverage. Incorporation through tillage improves effectiveness, though surface applications can be used where incorporation is not practical. -
Soil Blending:
Mix directly into soil or growing media prior to planting for consistent distribution.
💧 Activation
Water thoroughly after application or apply ahead of rainfall to initiate soil reaction and movement into the root zone.
📌 Rate Guidance & Soil Considerations
Application rates are based on average loam soils and should be adjusted depending on soil conditions:
- Sandy soils (low CEC): require lower rates and respond quickly
- Clay or organic soils (high CEC): require higher rates and respond more slowly
Soils with similar pH levels can require significantly different lime applications due to differences in buffering capacity.
🔍 Usage Notes & Agronomic Guidance
- Soil testing is strongly recommended before application, especially for larger areas. Lime requirements depend on soil texture, buffering capacity (CEC), and existing calcium and magnesium levels.
- Over-liming can raise pH too high, reducing availability of key nutrients such as iron, manganese, and phosphorus.
- Avoid using dolomitic lime in soils already high in magnesium, particularly in clay soils. In these cases, use calcitic (high-calcium) limestone instead.
- Apply 4–8 weeks prior to planting to allow time for pH adjustment. Fall and early spring are ideal application windows.
- Avoid applying alongside high-phosphorus fertilizers (e.g., rock phosphate or bone meal), as elevated pH can reduce phosphorus availability.
Guaranteed Analysis
- Calcium (Ca): 20%
- Magnesium (Mg): 10%
- Calcium Carbonate (CaCO₃): 50%
- Magnesium Carbonate (MgCO₃): 34%
- Calcium Carbonate Equivalent (CCE): 90%
-
Lime Score: 88
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)
