When do you plant leek in zone 5a?

In USDA hardiness zone 5a (last frost ~May 4, 2026, first frost ~Oct 6, 2026): Start seeds indoors Jan 23, 2026–Oct 17, 2026; Start hardening off Apr 10, 2026–Dec 21, 2026; Transplant outdoors Apr 17, 2026–Dec 26, 2026. Exact dates vary by location within the zone.

When to plant leek in zone 5a

A planting schedule for leek in USDA hardiness zone 5a, where the typical last spring frost is around May 4, 2026 and the first fall frost around Oct 6, 2026. Dates are computed from NOAA frost normals for a representative location (Rumford, ME) — your exact dates depend on your address.

Leek planting schedule for zone 5a

Start seeds indoorsJan 23, 2026 – Oct 17, 2026
Start hardening offApr 10, 2026 – Dec 21, 2026
Transplant outdoorsApr 17, 2026 – Dec 26, 2026

Playing it safe with tender crops? Spring frost holds off until about May 15, 2026 in roughly 9 years out of 10.

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Free on one garden — no credit card. See the full leek growing guide or the whole zone 5a calendar.

Leek in other zones

More crops for zone 5a

Frost dates are NOAA 1991–2020 climate normals for a representative location (Rumford, ME) in zone 5a; your exact dates depend on your address. Schedules are guidance, not guarantees.