Grape growing in the Puget Sound growing region is a new and evolving industry, and there's no consensus of how best to do it. Growers across the region are trying new techniques to be more successful, and we at Greenbank Cellars are experimenting as well.
The initial plantings of the afore-mentioned grapes were done in 1997 and were based on the current conventional wisdom. The plants were spaced at intervals of 3-4 feet with the width between the rows of 8 feet. The width between rows is a critical calculation. The height of the vines should be equal to or slightly less than the width between rows. This assures that the plants have maximum sun exposure time as the sun sets, and aren't shaded too early by the adjacent row.