During the first year of growth, the grape plant is focused on growing firm roots. Roots are more important to the plant than fruit during the first year of the plant's life.
During the second year, grapevines will start to produce very small grapes. These grapes are okay to eat, but if you are growing grapes to make wine, you should wait until the grapes are bigger and more plentiful.
By the third year, the grapevine will be producing full-bodied grapes in plentiful amounts. These grapes are perfect for harvesting to make wine.
Grapevines take a long time to mature. After the grapevine begins producing fruit, it will continue to produce grapes for more than 70 years.
Different varieties of grapes grow better in different areas. Be sure to match the grape variety to the soil type in your area for the best grape production rates.