Grape varieties

Cabernet Sauvignon: five years without moving

Between 2018 and 2022, Ontario's Cabernet Sauvignon acreage changed by exactly zero per cent a year. In a vineyard where every other major variety was rising or falling, the province's most famous red grape stood perfectly still.

A flat line in a moving table

The Agri-Metrics varietal study ranks Cabernet Sauvignon seventh in Ontario by acreage over that period, with an average annual change of 0.0 per cent. Around it, Cabernet Franc was adding 2.1 per cent a year, Chardonnay shedding 1.2, Riesling 1.3 and Gewürztraminer 4.2. A flat line in that company is not inertia so much as equilibrium: the blocks that suit the variety are planted, and there is neither reason to expand onto ground that will not ripen it nor reason to pull out fruit that sells.

And it does sell. LCBO VQA table wine sales in 2023 came to about $8.7 million, roughly eight per cent of the category — sixth overall and second among reds, behind only Baco Noir. There is also a named Baco Noir–Cabernet Sauvignon blend in the table at about $921,000, which is a very Ontario sort of wine.

The ripening problem

Cabernet Sauvignon ripens late — roughly a fortnight behind Cabernet Franc, which is the single most important fact about growing it here. In Bordeaux that fortnight is available; in Ontario it frequently is not, and a block that is fully ripe in a warm year is herbaceous and green in a cool one.

The variety is therefore restricted to the sites with the longest season: the Niagara River and Four Mile Creek sub-appellations, the warm plain around Niagara-on-the-Lake, and the Lake Erie North Shore. Even on those it is a vintage-dependent proposition, which is why so much of the crop goes into blends where a cooler year's fruit can be balanced by something riper rather than sold on its own.

What the regulation asks

Appendix A of Ontario Regulation 406/00 sets varietal Cabernet Sauvignon at a minimum average of 19.0° Brix for the provincial designation and 20.0° for an appellation wine. The provincial figure is among the highest in the appendix, level with Merlot and Maréchal Foch and a full degree above Cabernet Franc's 18.0°.

The one-degree climb to the appellation tier is comparatively gentle — Cabernet Franc and Chardonnay both climb two — but it starts from a higher base, so the absolute requirement of 20.0° is demanding for the province. The rule is written on the assumption that anyone bottling a sub-appellation Cabernet Sauvignon in Ontario is working on a site that can deliver it.

The "Cabernet" shortcut

The regulation contains a provision worth knowing about. Under section 3, the term "Cabernet" may be used as a synonym for Cabernet Franc, Cabernet Sauvignon, or any blend of the two, and "Cabernet" counts as a single varietal component when the minimum content for a dual- or triple-varietal wine is calculated. A bottle labelled simply Cabernet is therefore making a deliberately open claim, and the rules permit it.

For a province whose two Cabernets ripen a fortnight apart and are routinely blended, that flexibility is practical rather than evasive — but it is another reason the varietal sales figures understate how much of each grape is actually grown.

What it is paid

The 2026 price schedule puts Cabernet Sauvignon in class 10b at $2,599 a tonne — above Cabernet Franc at $2,308, marginally below Merlot at $2,614, and below Pinot Noir and Syrah. The premium over Cabernet Franc is the price of the extra fortnight: a grower accepting more vintage risk is paid a little more for carrying it.

Why so much of it is blended

A variety that ripens fully in warm years and greenly in cool ones is a natural blending component, and Ontario treats it as one. The Cabernet Merlot line alone accounted for about $5.6 million of VQA table wine sales in 2023 and the broader red blend category about $13.1 million — together more than the entire varietal figure for every red in the province combined. The regulation also protects the term Meritage for Bordeaux-style blends, giving producers a recognised name for the category. Blending is not a fallback here; it is where most of the province's serious red wine actually lives.

Where it grows

On the warm ground, and nowhere else at any scale. The regions page sets out the sub-appellations and what distinguishes them, and the climate page covers the heat accumulation that decides whether a late red ripens here at all.