When do you plant leek in zone 6b?

In USDA hardiness zone 6b (last frost ~Apr 23, 2026, first frost ~Oct 21, 2026): Start seeds indoors Jan 12, 2026–Nov 1, 2026; Start hardening off Mar 30, 2026–Jan 5, 2027; Transplant outdoors Apr 6, 2026–Jan 10, 2027. Exact dates vary by location within the zone.

When to plant leek in zone 6b

A planting schedule for leek in USDA hardiness zone 6b, where the typical last spring frost is around Apr 23, 2026 and the first fall frost around Oct 21, 2026. Dates are computed from NOAA frost normals for a representative location (ZIP 01509) — your exact dates depend on your address.

Leek planting schedule for zone 6b

Start seeds indoorsJan 12, 2026 – Nov 1, 2026
Start hardening offMar 30, 2026 – Jan 5, 2027
Transplant outdoorsApr 6, 2026 – Jan 10, 2027

Playing it safe with tender crops? Spring frost holds off until about May 4, 2026 in roughly 9 years out of 10.

Want exact leekdates for your address, a drag-and-drop bed layout, and reminders when it’s time to sow? Enter your ZIP:

Free on one garden — no credit card. See the full leek growing guide or the whole zone 6b calendar.

Leek in other zones

More crops for zone 6b

Frost dates are NOAA 1991–2020 climate normals for a representative location (ZIP 01509) in zone 6b; your exact dates depend on your address. Schedules are guidance, not guarantees.