• Emerald Harvest Cal-Mag, 1 gal
  • Emerald Harvest Cal-Mag, 2.5 gal
  • Emerald Harvest Cal-Mag, 6 gal
  • Emerald Harvest Cal-Mag, 15 gal
  • Emerald Harvest Cal-Mag, 55 gal
  • Emerald Harvest Cal-Mag, 270 gal
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Emerald Harvest

Emerald Harvest Cal-Mag

Emerald Harvest Cal-Mag

$45.65
$45.65
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Keep your plants productive and green in any growing medium with Emerald Harvest Cal-Mag calcium-magnesium supplement. Use Cal-Mag to:

  • Reduce the potential of calcium or magnesium deficiencies in your plants.
  • Promote chlorophyll production in plants to keep them green and healthy vigorous.
  • Activate enzymes in plants that help plants uptake nutrients.

Containing top-quality ingredients, Cal-Mag is designed to nourish crops with extra calcium and magnesium and create the right conditions for abundant flowering and a heavy yield. This is especially important when growing in some media, such as coco coir, but any garden can benefit. Growers use calcium-magnesium supplements to correct nutritional deficiencies inherent to some popular growing media. Calcium supports growth and encourages plant development, while magnesium is essential for chlorophyll production, so the garden takes enough energy from light. Magnesium also helps to build the enzymes plants need to uptake nutrients. Emerald Harvest’s Cal-Mag also contains kelp, which is a rich, natural source of nutrients that can be beneficial for crops.

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