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Trellising grapes

By Lynn Byczynski

Growing grapes may appear complicated to the beginner, and with good reason. Although grapes will grow anywhere, there are many kinds of training and trellising systems, and choosing the right one requires some study before planting.

Training and trellising go hand-in-hand because the kind of structure you build to hold your grape vines will affect how you prune them. The structure, in turn, depends somewhat on the type of grapes you grow because some are more vigorous and need stronger supports.

In general, a grape trellis needs to be able to support the weight of the crop and withstand high winds. It also should be designed to last 20 years, as that's how long you can expect your vines to produce.

Home gardeners planting just a few vines can use a fence that fits into the landscape or, better still, an arbor that provides shade in summer as well as support for the grape vines. To get good fruit production from an arbor planting, pruning becomes the key. Texas Extension has a nicely illustrated manual on arbor training.

Commercial growers with larger aspirations need to set up a trellis in the field. The main ingredients for a vineyard trellis are strong end posts with braces, earth anchors, or deadmen; posts along the length of the trellis to support the wires; and high-tensile galvanized steel wire to support the vines.

The most common type of trellis is the single curtain trellis with either one or two wires and posts every 16 to 24 feet apart, depending on the training system. With this type of trellis, various training styles are possible. Another popular type of trellis, especially in northern areas, is the double curtain, which allows the vines to spread horizontally across two wires.

The recommended trellis and training system varies by climate. Northern growers with shorter growing seasons usually choose training systems that expose more leaf surface to the sun, but those can be inappropriate to warm climates. To learn more about the best training and trellising system for your location, check the list below of state viticulture guides and choose the state nearest your own. Or, contact your state Extension service for recommendations.

California: Viticulture and Enology Home Page
Colorado: Grape Growers Guide
Idaho, Oregon, Washington: Northwest Berry & Grape Information Network
Iowa: Viticulture Home Page
Kansas: Commercial Grape Production
Michigan: MSU Grape Information
Missouri: Home Fruit Production: Grape Training Systems
New York: Cornell Viticulture
Ohio: Midwest Grape Production Guide
Oklahoma: Viticulture and Enology
Pennsylvania: Wine Grape Network
South Dakota: Viticulture in South Dakota
Texas: Winegrape Network
Vermont: Cold Climate Grape Production
Wisconsin: Growing Grapes

Lynn Byczynski is the editor of Growing for Market, a magazine for local food producers

Articles by
Lynn
Byczynski

About
the author:
Lynn Byczynski was growing organic vegetables and cut flowers for market when she decided to create a magazine that would help market gardeners nationwide share experiences and information. Her first issue of Growing for Market appeared in January 1992 and it has been published continuously since then. GFM is renowned in the market gardening world for realistic articles that give growers practical, how-to information about growing and selling produce and flowers. Lynn is now partnering with Johnny's to provide similarly useful information for the johnnyseeds.com website and other publications.

Lynn, her husband Dan Nagengast, and their two children have grown vegetables and cut flowers since 1988, selling through a CSA, at farmers markets, to chefs, grocery stores, and florists. They currently grow cut flowers and hoophouse tomatoes on about 2 acres of their 20-acre farm near Lawrence, Kansas.

Lynn is also the author of several books about market farming:
The Flower Farmer: An Organic Grower's Guide to Raising and Selling Cut Flowers; The Hoophouse Handbook; Market Farming Success
SHOP WITH CONFIDENCE AND SECURITY AT JOHNNY'S.

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