Cannabis nutritional needs go beyond N-P-K

What exactly are these two nutrients doing inside your plants? Calcium provides structural support to plants as they develop, strengthening cell walls as new tissue grows. Plants lacking in calcium can display symptoms such as tip burn on new growth or pronounced leaf curl. For some crops, calcium deficiency even manifests as damage to developing fruits. While calcium builds the foundations for your plants' structures, magnesium keeps the energy flowing. Magnesium is the atom at the center of all chlorophyll molecules, enabling plants to photosynthesize. When magnesium is lacking, chlorophyll in older growth breaks down and magnesium is remobilized to new growth, leading to lower leaf yellowing.

It can be difficult to meet the full needs of some crops through the use of complete fertilizers alone. Growers find that fertilizers high in calcium can often affect the pH of their substrate, typically leading to higher pH conditions. Some growers avoid with these conditions by rotating fertilizers, while others carefully build balanced fertilizer programs.

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Photo by Terre di Cannabis on Unsplash

Source: Greenhouse Grower