When Sweet Corn Is Ready in Yukon, and How Fast It Fades
Plan on at least 60 days from planting to ripe ears, and the planting can’t happen until the soil warms.
Yukon
Home and garden guidance for Yukon: hardiness zones, heating seasons, provincial programs and the rules that differ from across the border.
Gardening in Yukon
Everything we have worked out for Yukon: 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 Whitehorse, the last spring freeze falls around June 5 and the first fall freeze falls around August 25, 600 growing degree days in the year.
That is little accumulated warmth: tomatoes need a tunnel or a greenhouse here, whatever the frost dates suggest. Garlic does well: 39.1 weeks below 40 °F, comfortably past the six it needs to form a proper head.
Elsewhere on the property in Yukon: 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.
What Eats Spinach in Yukon, and When
In Yukon, what eats a spinach crop is mostly the calendar. At Whitehorse A, the longest day carries 18 h 45 of daylight, and long days alone push spinach…
When to Dethatch a Lawn in Yukon
Most Yukon lawns never need dethatching. Cut a wedge of turf and measure the thatch first: under 0.5 inch, leave it alone.
How High to Mow a Lawn in Yukon
Mow Kentucky bluegrass and fine fescue at 2 to 3 inches, tall fescue at 3 to 3.5 inches, and perennial ryegrass or rough bluegrass at 1.5 to 2.5 inches.
When to Plant Grass Seed in Yukon
In Yukon, sow cool-season grass seed from early June to early July, once the soil two inches down has warmed to 50 to 65 °F.
When to Dig Up Dahlias, Cannas and Gladiolus in Yukon
In Yukon, dahlias, cannas and gladiolus come out of the ground after the first frost blackens the foliage.
When to Winterize Sprinklers and Outdoor Faucets in Yukon
The calendar matters less than the thermometer. In Yukon, sprinkler lines and outdoor taps need draining before the air and soil settle into real cold…
How Late Can You Plant Trees and Shrubs in Fall in Yukon?
In Yukon, the safe target for fall planting is six weeks before the first fall frost, which at Whitehorse works out to mid-July.
When to Mulch Strawberries and Perennials for Winter in Yukon
Wait for the ground. Winter mulch in Yukon goes on after the soil starts to freeze, not when the first frost shows up.
When to Start Pepper Seed in Yukon
Start pepper seed indoors 8 to 10 weeks before the day you plan to set plants outside.