What to do about blossom end rot
Our tomatoes are on the small size and we are getting quite a few with blossom end rot. We used Scotts Meracle Grow Garden soild which is supposed to have added nutrients in it. We live in Cedaredge., Delta County.
Delta County Colorado
Blossom end rot is caused by a calcium deficiency as the blossoms develop into fruit. A second causal factor is inconsistent soil moisture as the blossoms develop. This malady usually affects only the first few fruits. Typically, the best preventative measure is to place a handful of bone meal, limestone, crushed oyster shell, or crushed eggshells in the planting hole as each transplant is placed in the soil. If you missed this opportunity and the problem persists, you can purchase an aerosol product at your local farm store, hardware store or home store commonly known as 'blossom end rot stop'. This is a calcium supplement designed to be sprayed into each blossom prior to fruit development.
If you are growing your tomatoes in containers and the soil is not garden soil, you could use the aerosol spray or you could fertilize your plants with fish emulsion or seaweed extract.