The mixture is good for all types of plants. Never experienced any blossom end rot. Check your soil p.h also. I add a little garden lime a few weeks before planting to keep p.h in check. Without correct p.h levels nutrient uptake limited. Try 1 teaspoon epsom salt mixed with 4 cups water in a spray bottle mist plants around every 10 days plants absorb it faster through leaves.
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