When to plant basil in zone 4a
A planting schedule for basil in USDA hardiness zone 4a, where the typical last spring frost is around May 12, 2026 and the first fall frost around Oct 3, 2026. Dates are computed from NOAA frost normals for a representative location (Stanton, ND) — your exact dates depend on your address.
Basil planting schedule for zone 4a
- Start seeds indoorsApr 21, 2026 – Aug 12, 2026
- Start hardening offMay 19, 2026 – Aug 30, 2026
- Transplant outdoorsJun 2, 2026 – Sep 9, 2026
Playing it safe with tender crops? Spring frost holds off until about May 26, 2026 in roughly 9 years out of 10.
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Free on one garden — no credit card. See the full basil growing guide or the whole zone 4a calendar.
Basil in other zones
More crops for zone 4a
Frost dates are NOAA 1991–2020 climate normals for a representative location (Stanton, ND) in zone 4a; your exact dates depend on your address. Schedules are guidance, not guarantees.