When to plant beets in Portland, Oregon
January 28 – February 11
Direct-sow outdoors · typical Portland yearClimate basis: NOAA station Portland Kgw-tv, OR (USC00356749), 1 mi (1 km) from downtown Portland (ZCTA 97204 centroid), elevation 159 ft, on the 1991–2020 climate normals. Direct-sow beets from approximately the dates above, anchored to the median last spring 32°F freeze (February 25). One year in ten still freezes after March 21.
The Portland year
- indoors under lights
- in the garden
- frost-free season
- 1-in-10 years still freeze to Mar 21
Every method, with its sources
Direct-sow outdoors
Jan 28 – Feb 11Purdue: semi-hardy — 2–4 weeks before the last frost. Penn State sows from Apr 1 (−30) and UNH keys to 45°F soil; the later Purdue range is used. Anchored to the median last spring freeze (Feb 25). Purdue University Extension · Penn State Extension (York County Master Gardeners) · University of New Hampshire Extension
Fall planting
Oct 6 – Nov 3Purdue Table 2: plant fall beets at least 4–8 weeks before the first fall frost, allowing for days to maturity. Anchored to the median first fall freeze (Dec 1). Purdue University Extension
Variety assumption: Assumes an average round variety (about 55–70 days; Penn State lists 70).
These windows describe typical years (1991–2020 climate normals), not this year's forecast. Freezes happen outside them — especially in frost pockets, valleys, and urban edges. Watch the forecast before committing tender plants.
Crop rule sources (3)
- Purdue University Extension: Indiana Vegetable Planting Calendar (HO-186-W) (accessed 2026-07-24)Hardiness classes: hardy = plant 4-6 wk before last spring frost; semi-hardy = 2-4 wk before; tender = after average last frost; very tender = at least 2 wk after. Table 2: fall planting at least 4-8 wk before first fall frost.
- Penn State Extension (York County Master Gardeners): Vegetable Seed Planting Guide (accessed 2026-07-24)Earliest/latest sowing dates for a May 1 last-frost / Oct 1 first-frost baseline; offsets derived by date difference from May 1. Also days-to-maturity figures.
- University of New Hampshire Extension: Growing Vegetables: When to Plant Your Vegetable Garden [fact sheet] (accessed 2026-07-24)Per-crop 'time from seed to transplant' and 'safe to set out in garden' relative to last frost.