Old Mission Peninsula AVA

Old Mission Peninsula stretches approximately 19 miles south into Grand Traverse Bay from the city of Traverse City in Grand Traverse County, northern Michigan. The peninsula reaches just 3 miles across at its widest point and is flanked by water on three sides: Lake Michigan, and the East and West Arms of Grand Traverse Bay. This narrow strip of land sits precisely on the 45th parallel north, sharing its latitude with Piedmont, the Rhône Valley, Bordeaux, and Oregon's Willamette Valley. At its center, the Old Mission community sits at 587 feet above sea level, and rolling hills characterize the landscape throughout.

• 19 miles long, maximum 3 miles wide, surrounded by water on three sides
• 45th parallel north latitude aligns with Piedmont, Rhône, Bordeaux, and Willamette Valley
• Part of Grand Traverse County in northern Michigan
• Michigan's smallest AVA, with all 11 winery tasting rooms within 5 miles of each other

The peninsula's climate is defined by the deep waters surrounding it. West Bay runs over 400 feet deep and East Bay over 600 feet deep, storing vast amounts of thermal energy that moderate temperatures year-round. This lake effect delays spring frosts, extends the growing season into November, and prevents the extreme winter cold that threatens vinifera vines across much of the Midwest. The region falls within USDA hardiness zones 5b and 6a, receives approximately 24 inches of rainfall and 80 inches of snow annually, and benefits from late springs and lingering autumns that allow for gradual, complete ripening of cool-climate varieties.

• West Bay over 400 feet deep; East Bay over 600 feet deep, providing exceptional thermal buffering
• Hardiness zones 5b and 6a with extended growing season into November
• Approximately 24 inches rain and 80 inches snow annually
• Lake effect prevents extreme frost during the growing season, protecting vinifera vines

The soils of Old Mission Peninsula are entirely glacial in origin, laid down during the retreat of the last ice age. Granite and limestone bedrock underlies the vineyards, topped with clay-rich subsoils and free-draining topsoils of gravels, sands, and loam. This sandy glacial loam, enriched with limestone, drains efficiently and minimizes ground freezing in winter, allowing vine roots to survive and thrive. The combination of well-drained topsoil, limestone influence, and rolling terrain creates conditions well-suited to aromatic white varieties and the production of wines with natural acidity.

• Glacially deposited soils with granite and limestone bedrock
• Clay-rich subsoils beneath free-draining topsoils of gravel, sand, and loam
• Sandy glacial loam with limestone enrichment throughout the peninsula
• Sandy soils minimize ground freezing, supporting healthy root systems through winter

Riesling is the dominant and most celebrated variety on Old Mission Peninsula, produced in styles ranging from bone-dry through off-dry and sweet to sparkling and ice wine. Pinot Noir holds the title of most planted red variety. The full range of plantings spans numerous cool-climate vinifera varieties including Chardonnay, Pinot Gris, Pinot Blanc, Gewürztraminer, Cabernet Franc, Merlot, Gamay Noir, Sauvignon Blanc, Muscat Ottonel, and Malbec, alongside hybrid varieties Chambourcin and Vignoles. The region produces approximately 90,000 cases per year, with an emphasis on whites and elegant reds across dry, off-dry, sparkling, and dessert wine styles.

• Riesling is the dominant variety, produced in dry, sweet, sparkling, and ice wine styles
• Pinot Noir is the most planted red variety
• 15 grape varieties grown in total, including both vinifera and hybrid varieties
• Annual production averages 90,000 cases across 11 wineries

The peninsula takes its name from a Presbyterian mission founded by Reverend Peter Dougherty in 1839. After the mission relocated to Leelanau Peninsula in 1852, the original settlement became known as Old Mission. The 19th and 20th centuries saw the peninsula focused on cherry orchards and fruit farming. Modern viticulture began in 1974 when Edward O'Keefe Jr. pioneered large-scale vinifera planting, establishing 55 acres of vines in 1975. Chateau Grand Traverse became the first commercial winery, receiving its license in 1976 and bringing in its first harvest in 1978. The AVA was officially established on June 8, 1987 by the Bureau of Alcohol, Tobacco and Firearms, and the region has grown from a single winery at founding to 11 wineries by 2023.

• Presbyterian mission founded 1839 by Reverend Peter Dougherty; relocated 1852, leaving the 'Old Mission' name
• Edward O'Keefe Jr. planted first large-scale vinifera vineyard (55 acres) in 1975
• Chateau Grand Traverse licensed 1976, first harvest 1978, the peninsula's founding commercial winery
• AVA established June 8, 1987 as the 92nd in the US and 4th in Michigan
• Grew from 1 winery at AVA establishment in 1987 to 11 wineries by 2023