In my raised garden, 4 ftx8 ft. 18" high I planted my tomatoes. This year after adding compost manure(4 bags) and more dirt, my plants are growing like weeds. I love it prox 3-4 ft tall, rich green, healthy, But they are growing together. Can I prune some stems so I can see separation and allow better penetration of light for the blooms?
I had an actual tomato plant hedge one year!
The answer is yes, you can, but you can also leave the plants.
Here is an article that will help you.