When to plant onion in zone 7b
A planting schedule for onion in USDA hardiness zone 7b, where the typical last spring frost is around Apr 5, 2026 and the first fall frost around Nov 1, 2026. Dates are computed from NOAA frost normals for a representative location (Friendsville, TN) — your exact dates depend on your address.
Onion planting schedule for zone 7b
- Start seeds indoorsDec 30, 2025 – Sep 30, 2026
- Start hardening offMar 10, 2026 – Nov 18, 2026
- Transplant outdoorsMar 24, 2026 – Nov 25, 2026
Playing it safe with tender crops? Spring frost holds off until about Apr 21, 2026 in roughly 9 years out of 10.
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Onion in other zones
More crops for zone 7b
Frost dates are NOAA 1991–2020 climate normals for a representative location (Friendsville, TN) in zone 7b; your exact dates depend on your address. Schedules are guidance, not guarantees.