Forcing Spring Bulbs Indoors in Ontario
In Ontario, the mean daily minimum for the coldest month sits at 13.6°F, measured at the Toronto reference station.
Gardening in Ontario
Everything we have worked out for Ontario: 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 Toronto, the last spring freeze falls around April 30 and the first fall freeze falls around October 16, 2,297 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 Ontario: 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.
Growing Spring Bulbs in Containers in Ontario
In containers, Ontario’s winter cold isn’t the problem, it’s already deeper and longer than most spring bulbs need.
Ontario Planting Calendar: When to Sow and Plant, Frost Dates Included
Ontario’s growing season runs from an average April 30 last frost to an October 16 first fall frost, per Environment Canada’s Toronto Pearson normals, with regional variation.
Canning at Altitude in Ontario: What Your Elevation Changes
At 528 feet above sea level, Toronto (the reference city Open-Meteo/GeoNames uses for this region) sits well inside the 0-2,000 foot band where water…
When to Plant Onions in Ontario
Plant onions in Ontario in early spring, not fall, and time it by day length rather than the calendar.
The Best Onion Varieties for Ontario
Onions grown in Ontario need to be long-day or intermediate-day varieties, full stop.
The Ontario Lawn Care Calendar, Month by Month
A month-by-month guide to mowing height, nitrogen timing, aeration and overseeding for Ontario’s cool-season lawns, built around Toronto’s average frost date.
The Best Grass Seed for Ontario Lawns
Explains why Ontario lawns need cool-season grass species, ranks Kentucky bluegrass, ryegrass and fescues by trade-off, and gives the fall seeding window before frost.
Firewood in Ontario: Which Woods Your Winter Actually Needs
Toronto’s coldest month averages a nightly low of 13.6°F, according to Environment and Climate Change Canada’s 1981-2010 climate normals.
Watering a Garden in Ontario: How Much, How Often, and the Local Rules
Ontario’s climate rarely pushes gardens into true heat stress, so the real skill is matching water to soil type and to what’s actually dry at root depth…