Grape varieties

Chardonnay Musqué: a clone the regulation treats as a variety

Chardonnay Musqué is a clone of Chardonnay. Ontario's wine regulation lists it separately, gives it its own minimum ripeness, and lets "Chardonnay" stand as its synonym. It is also one of the few varieties in the province whose acreage was growing.

Clone or variety?

Genetically the question is settled: Chardonnay Musqué is a muscat-scented clonal selection of Chardonnay, not a separate grape. It arose as a mutation, it propagates true, and no one disputes the parentage. What is interesting is that Ontario's rules decline to treat that as the end of the matter.

Table 1 of the VQA regulation lists Chardonnay Musqué as its own entry with "Chardonnay" as an accepted synonym, so a wine made from it may be labelled either way. But Appendix A, which sets minimum ripeness, gives it a separate line with different numbers: 18.0° Brix for the provincial designation and 18.0° for an appellation wine, where Chardonnay proper is 18.0° and 20.0°. A producer bottling this clone under its own name faces an appellation bar two full degrees lower than the same producer bottling it as Chardonnay.

Why the lower bar makes sense

The concession is not arbitrary. What distinguishes Musqué is aroma — grapey, floral, muscat-like notes that ordinary Chardonnay does not have — and those aromatics are at their clearest at moderate ripeness. Pushed to 20° Brix the wine gains weight and loses the very character that justifies growing the clone instead of the parent. The regulation has drawn the same conclusion it drew for Riesling and Sauvignon Blanc: where a variety's identity depends on picking earlier, a high minimum Brix would legislate against it.

One of the few varieties growing

In the Agri-Metrics varietal study covering 2018 to 2022, Chardonnay Musqué ranks twentieth in the province by acreage, and its plantings were rising at about 2.7 per cent a year. That is worth pausing on. Over the same window Chardonnay was down 1.2 per cent a year, Riesling down 1.3 and Gewürztraminer down 4.2. Only a handful of varieties in the top twenty were expanding at all, and most of those — Marquette at 11.7 per cent, GR 7 at 12.1 — were hardy hybrids growing from a very small base. A vinifera clone adding acreage in a contracting vineyard is a genuine signal of demand.

On price it is not treated separately. The 2026 GGO schedule lists class 9b as "Chardonnay, Chardonnay Musque" at $2,099 a tonne, so a grower is paid the same for either. The incentive to plant the clone therefore comes entirely from having a buyer who wants that wine, not from a premium on the fruit.

What it tastes like, and why Ontario took to it

The wine is recognisably Chardonnay in structure and unmistakably not Chardonnay in aroma: orange blossom, grape and a faint spice over the familiar texture. It is usually made in stainless steel, without malolactic fermentation and without oak, on the reasonable grounds that the point of the clone is its perfume and barrel-ageing would bury it. Ontario producers have used it both as a varietal bottling and as an aromatic seasoning within a larger Chardonnay blend.

Its rise here has been helped by the province's broader difficulty with Chardonnay: the market for oaked Chardonnay has been soft for two decades, and a Chardonnay that does not taste like Chardonnay sidesteps that problem entirely while using the same vineyard, the same rootstocks and the same picking crew.

How it is identified, and why that matters

Because Musqué is a clone rather than a distinct variety, nothing in a vineyard inspection or a DNA test separates it from ordinary Chardonnay — the two are the same grape by any genetic measure. Identity travels with the planting material. A block is Musqué because the nursery supplied the Musqué selection and the grower's records say so, which places more weight on propagation paperwork than most varietal claims carry.

That has a practical consequence for anyone reading the acreage figures. Musqué appears separately, twentieth in the province, only because growers register it separately; a block planted to the clone and recorded simply as Chardonnay is counted as Chardonnay. The reported acreage is therefore a floor rather than a measurement, and the statistics page covers the general problem of reading provincial figures as though they were censuses.

Where it grows

Plantings are on the Niagara Peninsula, concentrated on the bench sub-appellations where the cooler sites preserve the aromatics, with smaller blocks elsewhere. It goes where Chardonnay goes, because it is Chardonnay; the selection between the two is made at the nursery, not the site. The regions page covers the sub-appellations and the varieties page the whites as a group.