copper deficient & could be an heirloom plant ? they have no protection as new plants have &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 gardener