what makes tomatoes rot while on vine

Question

tomatoes are rotting while still growing on the vine

Answer 1

 

YOU NEED TO ADD CALICUM TO THE SOIL YOU HAVE BLOSSOM END-ROT ON YOUR TOMATOES ....EGG SHELLS HAVE CALICUM BUT NOT THAT MUCH.....AND ADD EPSOM SALTS ,ONE TABLESPOON PER GALLON AND POUR ON PLANTS TO RESTORE GREEN LEAVES TO  YELLOW  LEAVES ON PLANTS  BI-MONTHLY......EACH YEAR PUT HALF DOLLAR SIZE CALICUM ,BLOOD MEAL IN THE HOLE PLUS COMPOST AND USE EPSOM SALTS LATER, AS PLANT GROW. 

phil the gardner