What is wrong with my patio tomato plant?

Sounds like the pot is too small. I have a patio tomato plant too and it is in a huge pot, about 18 inches across and tall which is set inside a wooden planter box to insulate it from getting too hot of soil from the sun. So far so good with it, we are enjoying a bountiful crop of cherry tomatoes!

A 10 " pot is not very big when a tomato really sets its roots. It may work but wont produce many tomatos at all. They do normally wilt a bit in the middle of the day if sun is hot. Dont water at night. Always water in the early AM. Easy on the Miracle grow.

You may be watering and fertilizing it too much. You also need to make sure that they bottom of the pot is somewhat open to air, like put rocks underneath so air can reach. Miracle Grow is kinda like crank for plants, so it works for awhile, and then your plants get weird.

Also make sure the tomato plant is in full sun...

Oh dear, I just noticed you planted it in a ten inch pot. You are going to get a ten inch plant with that. You need a pot that is like at least 5 gallons or so.... The general rule of thumb is what is above ground is also below ground as far as roots, so if you don't have much room below ground, you won't have much growth above ground.

use a small amount of plant food as a foliar spray a plant feeds 95% from the leaves, so feed the mouth, not the feet. spray b-4 10 am and after4 pm, that is when the somota's are open under the leaves. is the plant in a very hot spot on the deck? imagine u putting your foot in a hot bath-tub of water, u can pull it out but a plant has to stay where u put it. consider a half shade and half sun for a few hours.

Maybe something has disturbed the plant or you have in in too much sun. Some tomatoes don't want full sun. try to move it or replant into a bigger container. Good luck.

for one thing the pot is way to small so therefore you have put yourplant in stress check the bottom of stem and see if it is like the others or is it bumpy also to much heat in the small pot dosent help it might not prouduce like you want or you could have a lemon try not to over baby it also

the pot is simply too small.

watering several times a day might help.

pruning would keep the water requirement down also.

It sounds like it could be getting to much sun. Move it to a shadier spot.