Back. 1  Vitacost Chromium Picolinate -- 500 mcg - 300 Capsules. 4.5 out of 5 stars 11. 2  Vitacost Strontium -- 680 mg per serving - 240 Vegetarian Capsules. 4.6 out of 5 stars 19. 3  Vitacost Glucomannan -- 2000 mg per serving - 180 Capsules. 3.7 out of 5 stars 51.
The most common cause of marijuana leaf cupping aka leaf margin rolling, leaf margin burn, and leaf tip curl/burn is overzealous use of marijuana plant food. In relationship to factors such as marijuana plant vigour and rate of growth. Leaf burn is often the very first sign of too much marijuana fertilizer.
Spider Mites And Marijuana Plants Spider mites on marijuana plants have to be one of the worst things out there. I always refer to spider mites as one of the three marijuana plant plagues, with the other two being powdery mildew and heat. Any of those three items can ruin your medical marijuana garden in a hurry. Fortunately, there is quite a bit of information about spider mites and marijuana plants.