They like sandy loam soil that is well drained.
I also found this for you: SOIL REQUIREMENTS: Grapes are widely adapted. They prefer deep, well drained soils. Once established, the plants are tolerant of droughty sites, with their long, deep striking roots. Soil of average fertility is best, as too rich a soil promotes abundant vegetative growth at the expense of fruit production. Grapes prefer slightly acid soils. When planting, prune the plant back to two buds. Place a 5 ft. stake next to the young vine for support for the first year. Select one cane to grow up the stake and remove other shoots. By the second year a permanent trellis should be erected. Seven or eight foot posts buried 2 feet, spaced at 8 foot intervals, will make a good support system. Wires can be placed at 3 1/2 and 5 feet in height.
Ours are growing along our chain-link backyard fence. They'll be 4 years old this year & we should get grapes!
at 4:09 PM on Feb. 1, 2010