It may be awhile before you can find these special grape vines available for home gardens, but they aren’t any more difficult to grow than other grape varieties. They need bright sunlight and good air circulation
Developed by hybridizers using a University of Arkansas cultivar and a Mediterranean grape, witch finger grapes are a specialty fruit not yet available for home growers. At this time, there is only one company that grows them. They are grown in Bakersfield, California and sold in Southern California farmer's markets and we now have them here
Witch Finger Grapes
It can take a long time to learn to properly prune a witch finger grape vine. Prune the grape vine in late winter or early spring, after the danger of frost has passed but before the vine begins putting on new growth. Remove enough of the stems to allow in plenty of sunshine and air, and to keep the vines from exceeding their boundaries.