A lack of nutrients in cannabis can also be detrimental to the plant, which is why we remind you of the importance of balance again.
Here are the signs of a lack of nourishing substances:
1. Sulfur deficiency. The leaves turn yellow, and the roots become a distinct pink color. The most advanced stage means leaf laxity, as well as the presence of brown spots.
2. Zinc deficiency. The leaves turn yellow, and the interveinal surfaces are filled with various pits or "pimples.”
3. Phosphorus deficiency. This element is the primary plant nutrient, and its presence is critical. Lack of phosphorus means many flowering problems. Also, the growth of cannabis stops, the plant is dwarfed. Many leaves will turn brown, and some will develop purple and yellow hues.
4. Potassium deficiency mainly occurs in open soil. It manifests itself in slower growth of the leaves, and the branches become very fragile.