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Double A Vineyards is a family owned operation dedicated to supplying you with high quality grapevines, along with berry plants, shrub willow and hops. We began production in 1990 with a small number of grapevine cuttings; since then, we have grown to over two million. We have also increased our grapevine variety list to over 150, with production of other varieties by request. Beyond offering a robust plant selection, we are also committed to treating our customers how we’d want to be treated – like family.

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Crop Protection Products For Integrated Pest Management

How To Select and Use Crop Protection Products in an Integrated Vineyard Pest Management Program

Rick Dunst, Viticulturist, Double A Vineyards, Inc. Double A Vineyards offers a full line of crop protection products available to our customers. There are several grape diseases that can cause crop loss directly, through infection of fruit, or indirectly, through loss of leaf area. Various insects feed on grape flowers, fruit, leaves, and roots, resulting …

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Disease Management Programs for Grapes – Part I

Rick Dunst, Viticulturist, Double A Vineyards, Inc. Managing disease is a key component to successful grape production. Cultural practices and variety selection can have a large impact on disease pressure and susceptibility, but most grape growers rely, to some extent, on chemical fungicide applications in order to produce disease-free fruit and foliage for the production …

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Vineyard Weed Control: Managing Weeds in Vineyards

Managing Weeds in Vineyards

  Rick Dunst, Viticulturist, Double A Vineyards, Inc.    When trouble-shooting the cause of poor growth in vineyards (especially newly-planted ones) competition from weeds is one of the first things to consider. In my experience, new growers often underestimate the competitive effects of weeds in the vineyard. This article will summarize some of the concepts …

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Grape Pest Management for the Homeowner

  Rick Dunst, Viticulturist, Double A Vineyards, Inc.     Chemical pest management options for growers with only a few vines are limited. While non-restricted use pesticides can be purchased and used by anyone (meaning, anyone who reads and understands the pesticide label prior to application and applies it legally), they usually come in package …

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How to Calibrate and Use a Backpack Sprayer

  Rick Dunst, Viticulturist, Double A Vineyards, Inc.     Small vineyard owners often find that they need to spray chemicals for control of weeds, insects, and disease, but can’t justify the expense of a tractor-operated sprayer (not to mention the tractor). The need for chemical applications to control grapevine diseases can be minimized by …

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Grapevine Red Blotch Disease - Double A Vineyards

Grapevine Red Blotch Disease

Rick Dunst, Viticulturist, Double A Vineyards, Inc.    Grapevine red blotch-associated virus (GRBaV) is a recently identified virus which represents the latest addition to the long list of graft-transmissible agents that have been discovered in grapevines. This article will summarize what is currently known and not known about red blotch, and the future for the …

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Wet Weather Brings High Disease Pressure to Vineyards - vineyard diseases

Wet Weather Brings High Disease Pressure to Vineyards

  Rick Dunst, Viticulturist, Double A Vineyards, Inc.   Higher than average precipitation across many parts of the Eastern and Midwestern states has brought disease management issues to the forefront. Over the past several weeks, our staff has been contacted by grape growers from many growing regions with disease problems in their vineyards, many which …

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Pierce’s Disease of Grape

Rick Dunst, Viticulturist, Double A Vineyards, Inc. With Jim Kamas, Assistant Professor & ExtensionSpecialist – Pomology & Viticulture, Texas A&M AgriLife Extension Service, Fredericksburg, Texas Grape growers in southern regions of the United States face a potential problem not encountered by growers in more northern regions–Pierce’s disease (PD) of grape.  An excellent resource, Pierce’s Disease …

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Sulfur Injury on Grapevines

  Rick Dunst, Viticulturist, Double A Vineyards, Inc.   Powdery mildew (PM) is an important vineyard disease worldwide.  As pointed out by Cornell University grape plant pathologist Wayne Wilcox, Eastern North America is the origin of powdery mildew, and we cannot grow grapes here without controlling it.  Sulfur is a traditional material used to control …

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