When to plant in Molalla, OR
USDA Zone 8bEverything below — frost dates, hardiness zone, and what to plant when in Molalla, Oregon — is derived from the closest NOAA station with complete climate normals.
Molalla enjoys a long ~248-day frost-free season — you can succession-sow, fit in a second crop, and grow long-season heat-lovers with room to spare. Zone 8b means many perennials and even some tender shrubs overwinter in Molalla, while your frost dates still decide when annuals go out.
Frost probability
MOLALLA 7NE · 1991–2020The date the last spring and first fall frost occur, by threshold and probability. A 90% date is later in spring — and earlier in fall — than a 10% date; the 50% · 32°F row is what most gardeners plan around. These are Molalla’s own odds, recorded at MOLALLA 7NE.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | May 4 | Apr 15 | Mar 26 | Oct 16 | Nov 1 | Nov 19 |
| 32°F | Apr 12 | Mar 16 | Feb 24 | Oct 31 | Nov 19 | Dec 9 |
| 28°F | Mar 10 | Feb 14 | Jan 2 | Nov 13 | Dec 6 | Jan 12 |
Download this table as CSV ↓ — every threshold and probability, plus this city’s planting-window dates.
What to plant now
TODAY · JULY 19Full-year planting calendar
Each bar is the exact window to take a planting action in Molalla, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 20 km · complete 32°F normalsWhen stations disagree by more than a few days, that spread is real microclimate variation — elevation, water, urban heat. Judge which station best matches your own yard.
Molalla planting FAQ
When is the last spring frost in Molalla, OR?
Molalla's average last spring frost falls near March 16 — the 50% mark at 32°F in the 1991–2020 normals. Hold tender transplants until the risk has passed, then plant out.
When is the first fall frost in Molalla, OR?
The first fall frost in Molalla typically arrives around November 19 (50% probability at 32°F). Harvest or protect frost-sensitive crops before then.
What hardiness zone is Molalla in?
Molalla is in USDA hardiness zone 8b. In zone 8b, winters are mild — many tender perennials overwinter here.
How long is the growing season in Molalla?
There are roughly 248 frost-free days in Molalla (a long growing season), running from the average last frost around March 16 to the first fall frost near November 19.
When should I plant tomatoes in Molalla?
In Molalla, start tomato seeds indoors around January 19–February 2, then transplant seedlings outdoors around March 23 once the danger of frost has passed.
Never miss a window in Molalla
An email when it’s time to start seeds, transplant, and sow — timed to Molalla’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Canby · 15 km
- Oregon City · 21 km
- Woodburn · 22 km
- Silverton · 22 km
- Wilsonville · 23 km
- West Linn · 25 km
- Gladstone · 26 km
- Oatfield · 29 km
Frost dates recorded at MOLALLA 7NE, 7 km from the city center · 1991–2020 NOAA climate normals · zone from the USDA/PRISM 2023 map. How we compute this.
BlissGarden. "When to Plant in Molalla, OR — Frost Dates & Zone 8b." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USC00355681. Retrieved from https://blissgarden.com/oregon/molalla.