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Emerald Harvest® Cal-Mag 1 Gallon



10 in stock


Cal-Mag is especially important for preempting deficiencies when growing in certain media, such as coco coir, but any garden can benefit.
Keep your plants productive and green in any growing medium with our top-quality calcium-magnesium supplement.
• Lush, vibrant, green growth and plant development
• Optimal chlorophyll production to support photosynthesis
• Less risk of calcium or magnesium deficiencies due to coco coir
Cal-Mag nourishes crops with supplemental calcium and magnesium, fostering the right conditions for abundant flowering and a heavy yield.
• Calcium, which helps hold cell walls and membranes together
• Magnesium, the central atom of the chlorophyll molecule
• Kelp, a rich, natural source of proteins and biocatalysts
Cal-Mag | 2-0-0
Derived from calcium nitrate, magnesium, sulfate, calcium acetate, magnesium acetate and kelp extract.
Guaranteed Analysis:
Total Nitrogen (N)                      2.0%
0.1% Ammoniacal Nitrogen
1.9% Nitrate Nitrogen
Calcium (Ca)                                3.0%
Magnesium (Mg)                        0.5%