Can i do anything to save rest of my tomatoes once some have blossom end rot?

Question

I know they're lacking calcium, but is there any application once the plant is established. I've got tons of tomatoes coming that are not effected yet, and I'd like to keep it that way. Thanks!! ;)

Answer 1

It's typically only the first set or two of tomatoes that are afflicted with blossom end rot.  The rest of the crop will most likely be fine.

When a tomato plant is planted out in soil that is too cold for it, the plant cannot take up calcium even if calcium is available in the soil.  The first fruit sets are affected, but by the time the second set of blossoms have formed, the soil has warmed up suffficiently and the plant can then utilize the calcium.  You don't need to do anything else at this point.  (And once the fruit is afflicted with blossom end rot, there's really nothing you can do to reverse it anyway)

Answer 2

You just received a good answer. Potassium helps plants fight disease. Have you considered putting a banana peal in water and swishing it around. Then give it to your tomatoes when a good rain comes on to put the potassium in the roots.  

Answer 3

Part of the problem with blossom end rot is often uneven watering causing the calcium not to be absorbed by the plant.  So if the watering evens out, you will probably not have a problem with the rest of your tomatoes.  Mulch helps keep the soil more uniformly moist.  Remove any affected tomatoes.   There is a good chance the remaining tomatoes will be ok.