The Venus grape cultivar is a seedless variety grown in the home garden for fresh fruit. Venus grape vines grow to a length of 10 to 20 feet and produce large clusters of blue-black-colored berries that are medium to large in size. The vines grow best in USDA hardiness zones 7 through 10 when planted during late winter or early spring while the young canes are in the dormant stage.
Select a planting location for the Venus grape canes in an area that has well-draining soil and receives full sunlight for a minimum of six hours each day. Verify the area has good air circulation, because this will lower the risk of fungal diseases on the vines.
Test the soil two weeks prior to planting to verify the pH is acidic at a level of 6 to 6.5. Work ground rock sulfur into the soil to lower the pH and let it rest for two weeks. Amend heavy clay soils found throughout Georgia by working 3 to 4 inches of organic compost into the planting area to a depth of 10 inches when making pH amendments.
Assemble a grape vine trellis in the planting rows to a height of 4 to 6 feet. Plant the Venus grape canes in planting holes that are deep enough to hold the cane roots when spread out. Set the holes 6 to 8 feet apart in the rows.
Provide water to the Venus grape vines when the weekly rainfall amounts are less than 1 inch. Apply water once the soil dries to a depth of 1 to 2 inches to prevent excess moisture that stimulates root rot.
Fertilize Venus grape canes after planting by applying a 10-10-10 fertilizer at a rate of 1/4 pound for each cane. Repeat this application in mid summer. Follow the same fertilizer schedule in the second growing season except apply at a rate of 1/2 pound.
Fertilize mature Venus grape vines by applying a 10-10-10 fertilizer in early spring and again in mid June at a rate of 1 pound for each vine.
Remove weeds and vegetative growth around the vines and apply a 4 to 6 inch layer of dry grass clippings around each vine. This will assist with moisture retention and prevent weed growth.
Prune the Venus grape vine after harvest by removing all 2-year-old canes that produced grapes the previous growing season. Remove all dead or damaged vines to encourage new, healthy growth. Retain all current year growth, because these vines will produce grapes the next season.