What Causes Zucchini Blossom End Rot Preventing Blossom ...
Jul 15, 2019· Calcium needs to go directly to the roots. Calcium carbonate tablets, or antiacid tablets like Tums, can be inserted at the base of the plant. They will then dissolve and within a few hours, calcium will be available to the plant. You can also run calcium through a drip system. Use either calcium chloride or calcium nitrate.