Thank you.
All the research I have done says that a Foliar spray does nothing for calcium uptake. (However I don't believe everything I read on the internet, even if it comes from a credible source)
Some nutrients do not move easily once inside the leaves so they don’t get to where they are needed eg iron, manganese and calcium. When calcium entering a leaf it will not be transported to developing fruits so it won’t prevent blossom end rot (BER) in tomatoes. Calcium entering roots can prevent BER.
My last ditch effort is Calcium Sulfate Dihydrate. I was going to try Calcium Chloride but was worried about salt.
I may pull all the plants, strip the (noticeable BER) fruits, flush the pots and start watering with the Calcium Sulfate.
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