Growing Roses in Manitoba: Planting Dates, Varieties and Local Pests
Container roses go in the ground in Manitoba from late May, once the frost risk fades. Bare-root plants go in as soon as the soil can be worked.
Manitoba
Home and garden guidance for Manitoba: hardiness zones, heating seasons, provincial programs and the rules that differ from across the border.
Gardening in Manitoba
Everything we have worked out for Manitoba: 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 Winnipeg, the last spring freeze falls around May 23 and the first fall freeze falls around September 22, 1,832 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 Manitoba: 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.
When Sweet Corn Is Ready in Manitoba, and How Fast It Fades
Sweet corn is ready in Manitoba roughly 60 to 90 days after the seed goes into soil that has reached 60 F, and that soil warms well after the last frost.
Growing Hydrangeas in Manitoba: Types, Colour and Winter
Hydrangeas can grow in Manitoba, but only certain types, and only with a little planning.
When to Lift Onions in Manitoba, and How to Cure Them
Lift onions in Manitoba once most of the tops have yellowed and flopped over, on a dry day, then cure them in a warm, airy, rain-free spot until the…
Heat Pump or Gas Furnace in Manitoba: Which Costs Less to Run?
On the numbers available here, a heat pump is the cheapest way to turn Manitoba electricity into heat: C$13.00 per million Btu delivered, against C$30.86…
How High to Mow a Lawn in Manitoba
For most Manitoba lawns, keep the grass between 2 and 3 inches tall, and make 3 inches your default if you don’t know what’s growing.
When to Dethatch a Lawn in Manitoba
In Manitoba, the best window to dethatch is late summer, before the first fall frost. The second best is late spring, once the grass is truly growing.
When to Plant Grass Seed in Manitoba
Sow grass seed in Manitoba by early August at the latest, counting back from Winnipeg’s average first fall frost of September 22.
When to Aerate a Lawn in Manitoba
Aerate a Manitoba lawn in fall, while the grass is still growing and well ahead of the first frost.
What Eats Beet in Manitoba, and When
In Manitoba, the things that eat into a beet crop are mostly weather and ground, not bugs.