What causes it on tomato's? I have one plant that have it and 2 that don't. At first I thought that I was watering too much. But I water all 3 of them the same and only one plant has it.
What i have read is that it is caused by a lack of calcium on the soil...and some places have said that it is caused by too much water and too much heat at the same time...inconsistant watering...I had it on 2 plants in particular for several weeks but now all the plants are fine. Here is a link: http://ohioline.osu.edu/hyg-fact/3000/3117.html
We also had it on a couple of plants and not all the others. Seems strange to me, but I'm mighty glad it was only a couple of plants.
I spoke too soon. I had to take out all the tomatoes from the big garden due to blossom end rot. The plants were doing fine until we stopped getting rain. I noticed lots of the tomatoes had the rot and not wanting to lose the green ones, I pulled out the plants. We still have the plants in the oval garden.
I am so sorry that you pulled-out those plants. When I get that on my toms, I just remove the deformed fruits and let the plants continue. I simply make sure that their watering is as regular as possible. I also use some seaweed calcium granules in the soil bed that I plant the toms in. Blossom end rot is not actually a systemic bacterial, viral, fungal or paracitic disease. It is a physiological problem.
I had the blossom end rot on a few of the plants but just pulled the affected tomatoes. Once they were gone and I put in the epsom salt and more fertilizer everything was fine.
