Vitis vinifera

About this product

Grape 'Centennial Seedless' (Vitis vinifera)

Overview

‘Centennial Seedless’ is a high-quality green seedless grape, excellent for fresh eating and drying. It performs best in a greenhouse or polytunnel in Ireland, where the berries develop good sweetness and size.

Key Features

• Seedless green berries, perfect for fresh eating and raisins
• Large, well-filled bunches under protection
• Good disease resistance under glass or in a tunnel
• Ideal for training along the roof of a greenhouse

How to Plant

Plant in Free-draining, reasonably fertile soil or loam-based compost in a border inside a greenhouse or tunnel. in a position with Full sun; needs plenty of warmth for best crops.. Dig a generous planting hole, mix in organic matter, and water thoroughly after planting. Apply a mulch around the base to help conserve moisture and suppress weeds.

Care Tips

• Plant inside a greenhouse or polytunnel and train on wires or along the roof.
• Prune in winter using a rod-and-spur system, taking care not to prune when the vine is bleeding sap.
• In summer, thin bunches and trim lateral shoots to improve light and airflow.

Size & Growth Timeline

Vines can easily reach 2–3m in each direction within 3–4 years when well managed.

Harvest

Under cover, grapes usually ripen from late August into September. Allow them to fully sweeten on the vine before harvesting.

Perfect For…

• Greenhouse and tunnel growing
• Families who prefer seedless grapes
• Home growers keen to try raisin-making or fresh dessert grapes