Ask a Question
Notify Me On Question Update
Email this Question
Why are tomatoes turning black (dark) from the bottom up when they begin to ripen. They are also dark on the inside.
Rate This FAQ
The condition that you are seeing is called blossom end rot. Blossom-end rot is a physiological disorder caused by a calcium deficiency in the young fruit. Utah soils have plenty of calcium so even though technically it is the problem, the real issue is fluctuation in the amount of water available to the plant that makes the plant unable to transport the calcium as needed. Tomatoes, squash, peppers, eggplants and melons are all vulnerable to this problem. The good news is that normally only the first few fruits to ripen are damaged.
There are a couple of different things that you can do to help prevent this condition. Overwatering your plants can aggravate this condition, especially if your plants are in a heavier clay soil. Keep a close eye on how much water you apply and how much moisture is in the soil. Mulching around your plants can also help to reduce the amount of water lost to evaporation and can help keep soil moisture levels more consistent. In addition, over fertilizing your plants can also contribute to this condition. I have included a link below to our tomatoes fact sheet.
Submit Your Suggestion
Other Questions In This Topic
- I have just discovered an ant colony in my outdoor herb pot. I noticed soil build up around a couple of the herbs, thyme and rosemary and also soil build up around the drain holes. This pot is 20 inches across and 15 inches deep. How can I get rid of the ants without damaging the herbs or poisoning my family? Thank you.
- I wanted to mail order some flowers to plant. Is the end of October too late to plant flowers?
- Are pine needles a good top mulch or addition to my compost pile? Others have said pine needles are poisonous. I live in Washington Terrace and my soil is sandy by nature.
- I have 4 lovely crenshaw melons on my home garden vines -- 1 large, 2 medium, and 1 small. None of them have gone yellow/white yet! We survived the snow flakes last weekend (I covered everything), but I see we are about to get another "hit" this weekend! Is there ANYthing I can do to speed up their ripening?? I have cut back my watering of the vines, but sprinklers still go on automatically in the morning. Would any of the "usual" things people do to ripen melons indoors (paper bags, put them with a banana, etc.) do any good while they are still on the vine?? From everything I have read, if they are picked while they are still green, they will never ripen -- is this true? If I keep them well covered during our few nights of 32-33 due this weekend, will they survive on the vine to ripen?
- I have some pumpkins that are still green (October 9th). Is there any way they will become ripe?
- When do I harvest my pumpkins or squash?
- I have a poinsettia that is about three years old. The first year it bloomed beautifully, then last year and now this year, just before the holidays, the leaves wither and fall off. I have not changed anything carewise. It is in an ideal place, gets plenty of dark hours, no drafts, filtered sun, and just enough water. Why is it doing this?
- In preparing my soil for vegetable gardening, I've added too much chemical fertilizer. I haven't planted anything yet. Is it too late to fix this?