Have you ever met a grower that was super stoked about blossom end rot or tip burn? No way! That's why FoxFarm® brings you Gringo Rasta® Cal-Mag to strengthen cell walls and aid in fruit development, helping you avoid the costly and frustrating deficiencies that cause these problems. Get ahead of the game with Gringo Rasta®! Gringo Rasta® Cal-Mag contains 3% Calcium (Ca) and 9% Magnesium (Mg).