When to plant tomato in zone 1a
A planting schedule for tomato in USDA hardiness zone 1a, where the typical last spring frost is around May 25, 2026 and the first fall frost around Aug 26, 2026. Dates are computed from NOAA frost normals for a representative location (ZIP 99788) — your exact dates depend on your address.
Tomato planting schedule for zone 1a
- Start seeds indoorsApr 18, 2026 – Jul 15, 2026
- Start hardening offMay 30, 2026 – Aug 19, 2026
- Transplant outdoorsJun 13, 2026 – Aug 26, 2026
Playing it safe with tender crops? Spring frost holds off until about Jun 6, 2026 in roughly 9 years out of 10.
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Free on one garden — no credit card. See the full tomato growing guide or the whole zone 1a calendar.
Tomato in other zones
More crops for zone 1a
Frost dates are NOAA 1991–2020 climate normals for a representative location (ZIP 99788) in zone 1a; your exact dates depend on your address. Schedules are guidance, not guarantees.