Roots Organics CalMag Liquid Calcium Magnesium Supplement
Roots Organics CalMag is a pure, all-natural liquid calcium, magnesium, and sulfur supplement designed to support fast-growing and heavy-feeding plants. Derived from kieserite and gypsum, this clean calcium-magnesium formula helps prevent and correct common calcium and magnesium deficiencies without adding extra nitrogen, phosphorus, or potassium to your feeding program.
Because Roots Organics CalMag is free of added N-P-K, it allows growers to supplement essential secondary nutrients without disrupting their primary fertilizer ratios. It is ideal for use alongside base nutrients like Roots Organics Buddha Grow and Buddha Bloom, especially in container gardens, soil gardens, soilless media, and high-demand feeding programs.
Key Benefits
Calcium, Magnesium & Sulfur Support
Provides essential secondary nutrients that help support strong cell structure, healthy growth, chlorophyll production, and overall plant vigor.
No Added N-P-K
Allows you to correct calcium and magnesium needs without changing your base nitrogen, phosphorus, or potassium ratios.
Great for Fast-Growing Plants
Ideal for heavy-feeding plants that require additional calcium and magnesium during periods of rapid growth and flowering.
Derived from Kieserite & Gypsum
Made from natural mineral sources for a clean, straightforward supplement.
Pairs with Roots Organics Nutrients
Use alongside Buddha Grow, Buddha Bloom, Trinity, HPK, and other Roots Organics liquid nutrients as part of a complete feeding program.
Useful in Soil & Soilless Gardens
A versatile liquid supplement for potting soil, soilless mixes, container gardens, indoor gardens, and greenhouse growing.
How to Use Roots Organics CalMag
Seedlings & Small Plants:
Use 1 teaspoon, or 5 ml, per gallon of water.
Mature Vegetative Plants:
Use 1–3 teaspoons, or 5–15 ml, per gallon of water.
Mature Flowering Plants:
Use 2–3 teaspoons, or 10–15 ml, per gallon of water.
Best Practice:
Shake well before use, mix thoroughly with water, and apply as part of your regular feeding program. Adjust usage based on plant size, growth stage, water quality, and visible plant response.
Always follow the product label and Roots Organics feeding schedule for best results.
