I usually work in a bit of steamed bone meal a while before I plant my tomatoes, and I don't ususally have a problem with bloom end rot. I know it takes a while for the bone meal to break down so that it can be used by the plant, so I do it as soon as I prepare the soil. Here's a couple of pics of my tomato patch, I have 5 varieties. 6 San Marzano Redorta, 2 White ghost, 1 Early Girl, 2 Beef Steak, and 3 Celebrities. This is my first year for the San Marzano Redorta, and the white ghost. The white ghost seeds were a gift from a seed company, so I am giving them a try, never saw white tomatoes before. You can see the open spot on the right side of the second picture where the sick one is.