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What to plant in June in zone 3a

93 crops to start indoors, direct sow, or transplant in June in USDA hardiness zone 3a. Typical last spring frost around May 21, 2026, first fall frost around Sep 22, 2026 — exact dates vary by location within the zone.

Zone 3a covers a lot of ground. Enter your ZIP for June dates from your nearest weather station and a month-by-month calendar:

Direct sow outside

Sow these straight into the garden bed this month.

Transplant outdoors

Move these hardened-off seedlings into the garden.

Plant out

Set out these crops (sets, tubers, or starts) now.

Keep going

Timings use NOAA 1991–2020 climate normals for a representative location (ZIP 99602) in zone 3a, computed with the same engine as GardenDraft’s in-app schedule. Guidance, not guarantees — your exact dates depend on your address.