When to Plant Leeks in Zone 3
In USDA zone 3a, plant outdoors November 29 to July 27, and expect your first harvest around July 27. (3a shown here — see 3a and 3b dates separately below.)
Leeks planting calendar for USDA Zone 3a
Average last spring frost
May 30
Average first fall frost
September 10
Direct sow
Nov 29
Projected first harvest
Jul 27
Most leeks mature in about 130 to 240 days depending on the variety, needing roughly 103 frost-free days in zone 3a.
Leeks planting calendar for USDA Zone 3b
Average last spring frost
May 20
Average first fall frost
September 15
Direct sow
Nov 19
Projected first harvest
Jul 17
Most leeks mature in about 130 to 240 days depending on the variety, needing roughly 118 frost-free days in zone 3b.
Not sure whether you're in 3a or 3b? Set your ZIP in HomeSown for dates tuned to your exact location.
Varieties to grow
2 varieties of leeks in the HomeSown library. Tap any for its full grow guide.
Common problems with leeks
What to watch for, with identification and treatment for each
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