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When to plant leeks in Zone 6a

In Zone 6a, start indoors around January 29 – February 12 and transplant around April 2 – April 16.

Your leeks timeline — Zone 6a

Start indoorsJanuary 29 – February 12
TransplantApril 2 – April 16
Zone 6a last frost~04/30
Zone 6a first frost~10/15
Start indoors; set out 2–4 weeks before the last frost. [src]Cited: University of New Hampshire Cooperative Extension — “Growing Vegetables: When to Plant Your Vegetable Garden”

Dates computed from Zone 6a's median NOAA frost normals and the cited rule. Your town may differ by a week or two — check your exact ZIP.

What you'll need

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Last verified 2026-07-16. Frost: NOAA NCEI 1991–2020. Zone: USDA 2023. Rule: University of New Hampshire Cooperative Extension — “Growing Vegetables: When to Plant Your Vegetable Garden”; UGA Extension (days to maturity).

Leeks in other zones

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