How to Grow Grapevines Organically

Select a sunny location for the grapevines, such as along a fence with southern exposure. Grapes ripen better and experience fewer diseases when grown in full sun. Allow at least 3 to 8 feet between vines for good air circulation, which also prevents disease. Prune and train the grapevines on a sturdy fence or build a trellis. Keeping grapevines pruned increases fruit yields, and improves air circulation and overall plant health.

Choose disease-resistant varieties adapted to your area. Choosing the right plant for the right location can mean the difference between success and a grapevine riddled with disease and pests. For northern U.S. areas, try Bluebell, Edelweiss, Fredonia or Steuben. In the south, try Interlaken or Flame.

Talk with master gardeners and county extension experts to learn about grapevine diseases that are prevalent in your area, and check on the vines every few days to assess their health. Treat diseases at the first sign of infection, such as scorched leaves, black spots, or a white, powdery growth on the leaves. Several organic fungicides, such as copper sulfate, are available to treat grapevine diseases, but they work best as a preventative treatment, or when applied soon after infection.

Take a pragmatic approach to insect management. If you notice insects, watch the vines for a few weeks to see if the pests are actually inflicting damage. Plant flowering herbs, such as yarrow and dill, near the grapevines to attract beneficial insects. Lacewings and ladybirds may take care of insect problems for you. Spray leafhoppers with an insecticidal soap. Handpick Japanese beetles from the vines, or treat them with milky spore disease. The grape berry moth spins silken webs that tie leaf and grape clusters together. Remove and destroy any fallen fruit or leaves in the fall, because the larva overwinter in these. Cultivate the soil shallowly in the spring to kill any remaining larva.