susansiens on Nostr: Isn't one factor in blossom end rot lack of calcium? I put ground eggshells in each ...

Isn't one factor in blossom end rot lack of calcium? I put ground eggshells in each hole I put a tomato plant in, then scatter additional shell around the plants as they grow. I have calcium-rich water, but apparently the calcium in that medium is not accessible to plants or humans.