Grapes are vigorous growers, and with the proper pruning, they will produce fruit with ease for 100 years or more.
Make sure you purchase grape vines from a reputable nursery. Vigorous, 1-year-old plants are best.
Select a site with full sun. If you don’t have a spot with full sun, make sure it at least gets morning sun. A small amount of afternoon shade won’t hurt. Your soil needs to be deep, well-drained, and loose. You also need good air circulation.
Construct a trellis before planting. Grape vines will need to be trained to some sort of support to grow upward. This will also cut the risk of disease.
Pruning is important. Not only would vines run rampant without control, but canes will only produce fruit once. Prune annually when vines are dormant.
Grapes are majorly propagated using cuttings and by grafting which is preferred because they produce vines identical to the parent in characteristics.
However, the maturity period is highly dependent on management practices since planting. Your backyard grapevine can take up to three years to produce viable grapes, but that timeline is based on several environmental factors as well as how you care for the plant. These include, pruning, fertilizer/manure application, watering, disease & pest control, environmental factors and soil drainage.
Grape plants produces 8 to 10 tons per acre. The cost of grapes in kilograms is between ksh200 to 300. This translates to a farmer getting around two to three million per year.