Need tomato help! What's wrong with them?

Too much water or not enough calcium

Looks like blossom end rot. Lay off the water, and add calcium and copper.

Remember: stress in a plant encourages it to set fruit. So lots of water and fertilizer as the plant is growing. And you should consider pinching off the first flowers and fruit.

Then, when your plant is big enough to your liking, pull back on the water. It will think it's dying and it will make a big fruit set. Then just give it enough to keep it going. Fruit will be firmer and sweeter too.

Blossom Rot. Like others have said, it's either lack of calcium or irregular watering. You can buy blossom rot spray at Lowes.

There's a calcium spray that you can spray on the leaves, stems, etc and they will absorb some calcium, but not as much as what you put in the soil, but it works quicker

Doom on.

Looks/sounds like a water problem to me. Over or under watering? Does 5 gal. pot have one or more holes at bottom not entirely on concrete so it can truly drain? I have had pots in the past being entirely on concrete and pretty much "sealed" at bottom so they could not really drain water reasonably as necessary.

2" gravel at bottom is great, but the composition of your soil above that determines % water/moisture retention vs. time. Absorb that for a minute.

Thus, no hard and fast rule about how often to water. Especially since daily temps increase as we get into the late spring, early summer - not to mention cooler, rainy days.

Old timers like my brother and I (around 70 years old) both rely on "new fangled" gadgets like Moisture Meters (Dr. Meter or equivalent - I'm not a salesperson). Less than $10 each, no batteries required (rely on a 10" probe to determine dry to wet moisture on a scale of 0 - 10 galvanically).

I would think you youngsters would be more in tune with electronic devices than us oldsters - j/k, trying to help. This little device absolutely helps to determine when your soil is dry - or not. Thus when to water. Available online, elsewhere.

Calcium and fertilizers like Miracle Gro for one of your "waterings" maybe every 3 - 4 weeks can absolutely help. Do not over fertilize 1st year of soil in your 5 gal. pot. 2nd year mix in Bone Meal and fertilize more often with your next tomato plant. JMO.

If successful with growing some tomatoes, watch out next for plant destroying pests like tomato hornworm. Use Bacillus Thuringiensis soon as you notice eaten leaves.

Good luck to you. Hope I helped.

quick hijack here, my loaded and beautiful cherry tomato has just up and wilted like it lacks water or someone snipped it right off at the base. Its planted in the ground so obviously its got plenty of water.

Any chance it recovers?