Grapes are large spreading vines that require good support. Allow 8 feet between plants. Grapes like well-drained soil and they need full sun. Grapes need sun and heat so, if possible a south-side slope is an excellent location for them.
Feed with a balanced fertilizer when the new growth appears in spring. An All-Purpose fertilizer works well.
Prune grapes in late winter or early spring. On young grapes, encourage an upright trunk. Prune lateral branches in following years. For the best production prune-back hard every year. Remove all two-year old branches and thin down first year branches to a few vigorous vines. Tip back remaining vines to a stub with three or four growing buds.
Pest and Disease Control
Grapes are subject to Bunch Rot (Botrytis) and Mildew. These diseases are best prevented through proper pruning and water to minimize conditions that favor fungal diseases. If additional control is needed a Dormant Spray of Copper is an effective solution. Scale insects and Mealy-bugs are occasional pests that are easily controlled using dormant season Spray Oil. Pests including twig Borers, Leafhoppers, and Grasshoppers are best controlled with Sevin. See a Spray Schedule for more details.
Download a complete information sheet on grapes, including grape varieties.
Canadice -Long clusters of medium sized red fruit. Great sweet and complex flavor, excellent for all uses. Early producer, bears in mid-August.
Concord (Seeded) – Concord is the classic juicing grape. Concord has seeds and thick skins. Large blue-black grapes are known for their great grape flavor. Concord has large vigorous vines and is a good producer.
Einset –Large clusters of medium sized red grapes. Flavor is reminiscent of labrusca and strawberry. Ripens September. Crack-resistant.
Glenora – An excellent variety for the Northwest. Large blue-purple seedless grapes are firm and juicy. Grapes have a nice mild sweet flavor. A vigorous and productive variety that bares in mid-September.
Himrod – Very early producer. Medium to large yellow-green seedless grapes have rich sweet flavor. Himrod is one of the earliest table grapes. Very good yields. Produces in August.
Interlaken -Well known and popular variety. Medium yellow seedless grapes that are excellent for fresh eating and drying. Grapes are crisp with great sweet/tart flavor. Fairly disease resistant. Produces late August.
Niagara (Seeded) -Also known as White Concord. Large white grapes with a strong unique flavor. Productive and vigorous, great for fresh eating and wines. Produces in Late September.
Suffolk Red – Top quality table grape. Medium to large dark red seedless grapes need full sun to develop. Grapes are firm with rich sweet flavor. Few disease problems. Produces in September.
Thompson Seedless–An excellent snacking grape. Pale green fruit, sweet and delicious. Ripens late August to September.
Vanessa –Excellent deep-red seedless grape with a mild fruity flavor. Early ripening makes this a great choice for the PNW.