Select a location for your red seedless grapes that gets full sun and southern exposure. This ensures the grapes get plenty of light and warmth to properly ripen.
Plant your grapes in well drained, rich soil. Work 3 to 4 inches of compost into the surface of the soil to a depth of 8 to 10 inches. Plant the grapes in the early spring as soon as the soil can be worked. Choose a red seedless variety of grape that is sweet and suitable for your climate, such as Candice, Reliance or Red Flame.
Add 1 inch of water to the grape vines a week if the weather is dry. As long as the grape vines are growing and producing the grapes will ripen.