The following was received via email: last year, I had tomatoes with blossom end rot which ruined the romas in particular. I wonder if there is something I can do now to prevent this from occurring this year. Plants are in a plastic shelter in Bella Coola, and I feed them Miracle Gro for Toms. Any suggestions? Varieties not bothered are Tumbler and Gold Nugget, but I have Nicolaev pink, Black Russian plum, Kazahk and some others. Thank you for help.