I have a tomato plant about 4 ft tall that gave me 3 tomatoes and now it is being dormant. Water it regularly,it has yellow flowers,fertilized,added eggshells. No tomatoes! I even went and pinched off the "suckers."

What is your advice???

Slap it silly!!!

We have 2 tomato plants that are about 4 feet tall also. It has about 20 little yellow blossoms....but no tomatoes yet. Wish it would hurry up and grow some tomatoes OR I will have to slap it silly!!

My DH had to use something called Blossom Set last year because our plants had similar problems.

Never heard of it. I will keep that in mind. Thnx.

We do not get tomatoes until the end of August and Sept.

ditto here.

A good tip I learned is that when the tomatos start ripening, and the plants are still making blossoms and little tomatos, you have to shock the plant into getting busy to RIPEN the fruit that is on there. No, don't moon it!! Either grab the main stem and give it a firm twist, or take a long knife and cut the roots about 3-4 " from stem, straight down into the soil, most of the way around the plant.
This gets more ripened before the frost, but you probably don't have to worry about that in NC, I am jealous....

Try blossom set. It worked for me.

Tomatoes need feeding. Have you been watering with some tomato plant food in the water?

Needs pollination. Where are those bees!!

Shake it so the pollen gets shared with all the other flowers.
You can use something called Blossom Set to get more fruit.
Add some Epsom Salts.

Prune off a quarter or so of all the leaves after it's set the tomatoes.

Cut off long vines that don't have tomatoes set on them and stick them in water or soil, they root nicely for me. This works if you find one in the bunch that looks different, or you want one a friend has, etc. Should you have a green house you can grow them all year round since they are perennials. They are usually grown as annuals since they are tender and freeze out easily, but in the tropics they can grow all year round.