Why are my tomatoes turning black? There doesn't appear to be any infestation of any sort.?

Question

All 3 varieties have the same problem.

Answer 1

Several others are on the right track. Blossom end rot!! Easiest thing in the world to prevent. Yes it is caused by a calcium deficiency. What is the best source of calcium? MILK !! You may not be able to save your crop for this year but try mixing some powdered milk up and watering with it. Next year pour about 1/2 cup of dry powdered milk in each hole when you set out your plants. The result will be "NO BLOSSOM END ROT" Might I suggest adding some newspapers under your plants after they are well estalblished. (I do it when setting out the plants) This will conserve moisture in the ground and help with the water bills. Here in South Texas we have to use every trick in the book to save water.

Answer 2

I presume you are describing a condition called "blossom end rot" which is when the bottom half of the tomato fruit turns black and rots. This has been shown to be due to a calcium deficincy in the soil. There are some calcium containing spray products that you can buy to spray on the little green tomatoes before the condition sets in, but these are ineffective in my opinion. When it happens I just pull the little tomato off and throw it away so that the plant can avoid wasting any more energy on an afflicted fruit. I have thought of feeding my afflicted plants with skim milk, but I have never tried it. The only real way to treat this problem is prevention, and that means mixing calcium into the soil before you plant. This is best done with bone meal in my opinion, but powdered limestone works almost as well.

Answer 3

Your tomatoes have blossom end rot. This is most often caused by a calcium deficiency in the soil, due to irregular watering times and amounts. It may also be due to too much nitrogen-high fertilizer.

Give them each a shot of 3 tbsp epsom salts (magnesium sulfate) in a gallon of water, then let them dry out, at least a week.

Resume watering regime on an every third day basis--not too much! 2 gallons per plant is sufficient at this time of year.

Answer 4

Your problem most likely comes from the way you are watering your tomatoes. If water gets on the tomatoes and sits, it will cause the problems you are describing.

Make sure to keep water off the plant. Water at ground level. Do not spray the plant.

Keeping the plant and tomatoes dry should solve your problem.

Strange isn't it?

Answer 5

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blossom end rot 2 causes lack of minerals like calcium, or too much fertilizer if you use Miracle grow or other weekly dose fertilizer cut back to every other week if not then about a teaspoon of ground egg shells, lime,or ground drywall, or 2 ground calcium tablet, or or 2 tablespoons plain non medicated epsom mixed 50/50 with wood ash salt like people put in water to soak their feet in should help i usually put a tablespoon of the epsom salt mix in the hole when i plant and work it into the soil then about once a month work a tablespoon around the base of the plant Blossom end rot also effects squash watermelons and bell peppers kinda badly the epsom salt and wood ash work on them too if you do use fertilizer and cut back I'd still put some of the stuff above around the plant it wouldn't hurt

Answer 6

Tomato Plants Turning Black

Answer 7

Do you have them in pots? Maybe you need to drill holes in bottom of pots so you don't get tomatoe rot... To much water.

Answer 8

Too much water and maybe plant food

Answer 9

There is no infestation, they just have a high level of melatin in their skins. use sunblock on them everyday.

Answer 10

sounds like vine rot...it comes from too much water usually...check the drainage