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Botanicare Cal-Mag Plus




Cal-Mag Plus by Botanicare is a supplement used to deliver calcium, magnesium, and iron to plants, promoting strong stalks and maximized yields. Because Cal-Mag Plus can be used with any base nutrient on the market, this supplement makes up for possible deficiencies of calcium, magnesium, and iron. This product is ideal for coco coir as well as hydroponics.

  • Guaranteed Analysis: 2-0-0
  • Calcium, magnesium, and iron supplement
  • Can be used with any base nutrient
  • Strengthen plant stalk and increase yield

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Botanicare Cal-Mag Plus Calcium and Magnesium Supplement

Cal-Mag® Plus is a specialized calcium, magnesium & iron, plant supplement designed to compensate for deficiencies in some commercial and hydroponic nutrient programs. Cal-Mag Plus also compensates for the natural calcium draw of coco coir fiber.

Cal-Mag® Plus provides a precise balance and optimal ratios of the calcium, magnesium, and iron that are critical throughout all stages of growth, especially in heavily fruiting plants and fast blooming annuals. Cal-Mag Plus is fortified with a proprietary blend of select trace minerals to help maximize yields in fruiting and flowering plant varieties, prevent blossom end rot in tomatoes and peppers, and reduce tip burn in lettuce. When used in combination with nutrient solutions Cal-Mag Plus functions as a catalyst to increase the uptake of essential minerals.


N 2.0%, Ca 3.2%, Mg 1.2%, Fe 0.1%


For hydroponics, soil, and container gardens:

  • Use with any crop (tomatoes, lettuce, peppers, fruit, and flower-bearing plants). Use with Botanicare Nutrients or preferred nutrient programs. Always use to supplement reverse osmosis water or when growing in coco coir.
  • Use with every watering as needed. Mix well and adjust pH accordingly.
  • Shake well before each use.
  • Add 1 tsp (5ml) per gallon of water, Mix well and adjust pH to 6.2-7.0 before application.
  • Can be used as a foliar spray to further enhance growth. 10-15 mls per gallon.


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