Grape growing in Ontario, explained · on the web since 2000

Regions

Pelee Island: an appellation that is one township

South Islands is the smallest viticultural area in Ontario and the only one defined as a single municipality. The regulation describes it in twelve words: the land within the political boundaries of the Township of Pelee.

The definition, and the nesting

Table 1 of Ontario Regulation 406/00 defines seventeen viticultural areas. Most run to a paragraph of road names and concession lines. South Islands gets one clause: "The land within the political boundaries of the Township of Pelee."

What makes it interesting is that the same land is also inside a larger appellation. Lake Erie North Shore is defined as "the land within the political boundaries of the Township of Pelee and Essex, Kent and Elgin counties, except the part of Kent County lying to the north of the Thames River" — so Pelee is explicitly named in both. A wine grown on the island may be labelled South Islands or Lake Erie North Shore, the narrower claim or the wider one, and the regulation permits either.

Canada's southernmost vineyard

Pelee Island sits in the western basin of Lake Erie, closer to the latitude of northern California than to most of Canada, and it is the southernmost inhabited land in the country. Everything about its viticulture follows from two facts: it is further south than anywhere else growing grapes here, and it is surrounded by a large, shallow, relatively warm body of water.

The lake is the more important of the two. Water changes temperature far more slowly than land, so it delays the island's spring, extends its autumn, and moderates the winter minima that decide what can be planted. The result is the longest growing season in the province and, in most years, the mildest winter — which is why the island can carry varieties that are marginal on the mainland. The climate page covers the lake effect in general terms.

Where Canadian wine started

Commercial winemaking in Canada began here. In 1866 a group of growers planted the island and founded Vin Villa, generally recognised as the country's first commercial winery, and for a period in the nineteenth century Pelee Island was a genuine centre of North American wine production.

That history is the reason a small island has an appellation of its own. The history page covers the longer arc — the labrusca century that followed, the 1988 Free Trade Agreement and the pull-out, and the vinifera replanting that produced the modern industry.

Farming an island

The advantages come with a logistics problem that no mainland grower has. Everything that reaches the island — equipment, posts, wire, fuel, fertiliser, spray materials — arrives by ferry, and everything that leaves does the same. The ferry runs on a schedule and stops when the ice comes.

That constrains the vineyard calendar in ways that have nothing to do with the vines. A machine that breaks in September cannot be replaced the same afternoon. A spray decision that depends on a delivery has to be made further ahead than it would be in Niagara. And for icewine, where the crop is picked in the coldest part of winter and must be pressed immediately in a continuous process, the island's winter access is a real planning question rather than a detail.

A lake that is shallow, and why that matters

Lake Erie is the shallowest of the Great Lakes, and the western basin around Pelee is the shallowest part of it. That changes the moderating effect in both directions compared with a deep lake like Ontario.

A shallow basin warms faster through spring and summer, so it gives back more heat into the autumn — part of why the island's season runs long. But it also cools faster in a hard winter and can freeze over, and once there is ice on the lake the moderating effect largely stops. The island's advantage is therefore real but not unconditional: it is reliable in a normal winter and thinner in a severe one, which is the kind of distinction that decides whether a tender variety is a sound planting or a gamble. Brock's VineAlert samples bud hardiness on the Lake Erie North Shore through each dormant season.

What grows there

The longer season and milder winters let Pelee carry the varieties that need them. The later-ripening reds that are a vintage-dependent proposition on the benches — Cabernet Sauvignon, Merlot, Syrah — have a better chance here, and the island grows a broad spread of vinifera rather than specialising the way the cooler regions have.

The island is also a substantial part of the province's vineyard by area rather than a curiosity, which is easy to miss given how the appellation is described. The regions page sets South Islands against the other sixteen areas, and the varieties page covers what the province plants and why.