I was all excited when I saw my beautiful round tomatoes turning red. I couldn’t wait to cut one up and enjoy the fruits of my labor! Then, just as they were turning a nice shade of red, I noticed something devastating… my tomatoes are rotting!

They look all nice from the top, but as soon as I go to pick one I realize that the whole bottom of it is rotten and moldy. Yuck!!

I called my mother-in-law (as I do with all of my homemaking questions!) and described to her what the tomatoes looked like. She quickly diagnosed my problem:

Tomato Rot (also know as Blossom-end Rot).

She suggested that I pick the bad ones off the plant; and don’t throw them in the compost pile.

I’ve been searching for an answer to the problem, but I can’t find anything that will tell me how to treat it, only how to prevent it. It comes from a lack of Calcium in the plant. It could be from a lack of water, too much water, or low pH levels in the soil.

So, I’m not sure what to do now.

At least the tomatoes in the goat’s pen are still lookin’ good!

I still have lots of nice big green tomatoes growing on the affected plants, and I need to treat them before they go bad too! Anyone know what to do to STOP Bottom-end Rot?

UPDATE (6/2014):

I was scrolling through my archives and found this old post, and thought I should update you all on what I’ve learned in the years since writing this and how I prevent Blossom End Rot in my garden.

It’s simple, and free.

I save my cracked egg shells and used coffee grounds, set them out in the sun to dry, then sprinkle them liberally around the base of my tomato and pepper plants. Since I’ve been doing this, I’ve never had a problem with Blossom End Rot. Highly recommend!