Honalo, Hawai'i
The Geneva Double Curtain System In the subtropics, some grape varieties grow 10 feet, and others grow up to 34 feet long in a single season. In the Geneva Double Curtain System I have used for the 4 Vineyards, two long wires are used for training. My “modified” system adds redwood slats between the wires, and so that I can do long-arm pruning in a much smaller area which is much more efficient. In this system, the vine is trained to run to the T-Bar (the cross slat of
redwood between two different wires) and when it reaches the T-bar I cut the top of the vine to encourage the top two buds to each go in opposite directions, then I tie them on to encourage growth in that direction. When the two vines reach the wires on either side they are encouraged to go two ways also. It’s possible this system could also increase fruit production in a limited space.
Below are two pictures of this system
The Modified Geneva Double Curtain System
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