Pruning perennial tomato plants
In coastal San Diego with minimum winter temperatures in the mid 40's F this year, I left some grafted tomato plants over-winter. They are now very leggy but are still setting flowers. Should I prune them back now cutting off the new growth at the end of the long, bare stalks? If so, will the old stalks re-sprout or will new stalks grow?
Much of your tomato plant stems are quite woody, and pruning into the woody areas will not result in any new stem growth.
The links below will help you with the most common types of pruning that can be done on your plants.