Culture
Best grown in deep, loamy, medium moisture, well-drained soils in full sun. Tolerates a wide range of soil conditions, including average garden soils, but must have good drainage. Best sited in a location sheltered from winter winds (preferably a southern facing slope) and well removed from frost pockets. Self-pollinating. Grapes need a support system, training, regular spraying and regular pruning to maximize fruit production.
‘Chambourcin’ is not reliably winter hardy throughout USDA Zone 5.
Noteworthy Characteristics
Vitis is a genus of about 65 species of woody vines. Hybrid grapes are grown for a variety of purposes, primarily for making wine, but also as fresh fruit from the vine or dried as currants, raisins or sultanas. Vines are infrequently grown for ornamental purposes only.
The genus name Vitis is the Latin name for the old-world vineyard grape (Vitis vinifera).
‘Chambourcin’ is a French-American hybrid grape of unknown parentage. This is a woody, deciduous, tendril-climbing vine. Panicles of fragrant, greenish flowers appear in spring. Dark blue-black grapes mature in mid-late season and are primarily used in wine-making. Large, shallowly-lobed green foliage. Flowers are attractive to bees. Ripe fruit is attractive to birds, mammals and some hornets and wasps.
Problems
Grapes are high maintenance plants that require regular pruning, structural support, and pesticide treatments to produce significant yields. Grapes are susceptible to a large number of diseases, particularly in humid summer climates, including anthracnose, black rot, downy and powdery mildew, crown gall and botrytis bunch rot. Insect pests include phylloxera, grape berry moth, Japanese beetle, leaf hopper, leaf roller, mealy bugs and flea beetles. Birds are perhaps the most damaging vertebrate pest to grape yields, but deer can also eat young shoots, leaves, and fruit clusters.
Uses
Grapes are primarily grown for fruit production in home fruit gardens where ornamental interest is not a main concern. However, grapes do in fact have good ornamental value: bold summer foliage, showy fruit, some fall color and shaggy, twisted trunks and branching often best seen in winter. When grown on fences, walls, trellises, arbors or other structures, grapes can be quite attractive year-round and can provide good cover, screening, or shade to areas around the home. Woody vines can be woven into decorative wreaths.