i have a pair of table grapes, about 3 years old, they have fruits but smaller than i think they should and birds get to the ripe grapes before me. i pruned them, what else do they need to get bigger fruits?
If you prune them properly and give them a feeding in the early spring, there really should not be much else you need to do. Also, be sure they are getting enough sunlight. For grapes to develop fruit properly they need at least 6 to 8 hours of direct sunlight a day.