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I think it's a virus. Next year, use a different type tomato, plant in a different area, and don't put the diseased plants in your compost pile.
That is blossom end rot, and I do not know of any 'natural' treatments for it, but there are products at Walmart, and home/garden centers, and farm supply stores to treat it. Best of luck to you!
Your tomatoes are suffering from Blossom End Rot. Primary cause is a lack of calcium in your soil. Check with your local gardening store or google Blossom End Rot. You can also start adding your egg shells to your soil, or mix them with water for your watering routine.
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Not all my tomatoes have black on the bottom, but enough to be concerned. What do you think the problem is? Should I just pick the ones that have the black on the bottom or let them grow out as they get bigger? Thank you.
By William
William, this sounds like blossom-end-rot and if it is, check with your local nursery (any of them including WalMart) and ask for Dolomite or some type of calcium for amending your soil. Better yet, take one of the worse tomatoes in with you, and ask what your nurseryman thinks is causing the problem
Hope this helps,
MisMachado
I watch the Garden Guy on Saturday morning here in AZ and he claims it is from not giving you tomatoes enough water, they should have a gallon a day. Hope this helps. Good luck.
This won't help for this season, but next spring, plant some egg shells in the same hole/trench with your tomatoes and the calcium will help with the blossom end rot. Good luck!
It sounds like blossom end rot which is caused by uneven watering and lack of calcium. This can be prevented by watering often and spreading crushed egg shells around the plants. I keep an old oatmeal can under the kitchen sink and and drop in rinsed out egg shells all year. By planting time, I have emptied that can many times.
I've had those nasty spots on All my larger tomatoes in the past;last year & the year before-but not on my cherries! And they were in the same plot! I will definitely put eggshells in from now on. I've been putting them into most of my garden beds for my other veggies.My Tomatoes are in 2 Topsy-Turvy's this year-store bought plants.
What causes black spots on tomatoes?
By B
They may be caused by plant fungi. Keep them from spreading by lightly spraying vinegar over your tomatoes if they're still attached to the shrub. But, if they've already been harvested they may be a lost cause. Better ask an agriculturist about it.
The leaves on my tomato plants are turning yellow and dying and some of the tomatoes are black on the bottom. However, new leaves are growing up the side of our house.
