Skip to main content

Planting calendar for ZIP 97873 (Seneca, OR)

When to plant vegetables in Seneca, OR (USDA hardiness zone 5b). Typical last spring frost around May 28, 2026 13 days year to year), first fall frost around Sep 18, 202613 days).

Playing it safe? Spring frost holds off until about Jun 13, 2026 in roughly 9 years out of 10 — a good target for tender crops like tomatoes and peppers.

See the full Seneca, OR planting calendar for dates typical of the whole city.

Want exact dates for your address, a drag-and-drop bed layout, and reminders when it’s time to sow? Enter your ZIP:

Or get a printable ZIP 97873 calendar and sowing reminders by email:

Month by month in Seneca, OR

February

March

April

May

June

July

Understand your frost dates

Frost dates for ZIP 97873: NOAA 1991-2020 normals (USC00354291 JOHN DAY, OR US). Your exact dates depend on your address and microclimate. Schedules are guidance, not guarantees.