Does a Wall in Quebec Need a Vapour Barrier?
Yes. Quebec follows the National Building Code of Canada, and Part 9, Article 9.25.4 requires a vapour barrier in insulated wall assemblies, full stop.
Home & garden, state by state
Everything we have worked out for Quebec: what to plant and when, which varieties finish in time, the pests that actually turn up here, and the jobs that pay off month by month. We also cover the rest of the property, from lawns and soil to home care and energy, because a garden rarely stops at the vegetable bed.
The numbers first, because everything else follows from them. Measured at the weather station in Montreal, the last spring freeze falls around May 6 and the first fall freeze falls around October 5, 2,268 growing degree days in the year.
That is enough for early varieties, tight for anything late. Garlic does well: 30.4 weeks below 40 °F, comfortably past the six it needs to form a proper head.
Elsewhere on the property in Quebec: the pests that turn up here.
Figures from Environment and Climate Change Canada. A state is not one climate: elevation, a large lake or the coast can move these dates by two weeks either way, so check your own county with the extension service before you spend money.
Yes. Quebec follows the National Building Code of Canada, and Part 9, Article 9.25.4 requires a vapour barrier in insulated wall assemblies, full stop.
A Quebec winter isn’t a cold snap you ride out with the thermostat down. It’s a nine-month heating season built on one of the highest degree-day totals…
Quebec’s benchmark weather station, at Montreal-Trudeau, logs about 4,363 heating degree days a year below 18°C.
In Quebec, the heat can safely go quiet for a few weeks in June, when the average temperature finally climbs back above 18°C and neither furnace nor air…
Sowing carrots in Quebec means dropping seed directly into the ground once it can be worked in spring, timed backward from your local last-frost date…
Sweet corn can ripen in Quebec, but the calendar is tighter than gardeners expect.
The dates that matter for sweet corn in Quebec aren’t frost dates. They’re soil temperature and the calendar days left before autumn frost returns.
Sow autumn spinach in southern Quebec between mid-July and mid-August, counting backward from a harvest that lands before the season’s first hard frost.
Spinach will bolt early almost everywhere in Quebec, and the reason has nothing to do with a hot summer.
Quebec’s ground can carry an asparagus bed through its full ten-to-fifteen-year run, but only where the plot drains.