When to plant in Hayden, ID
USDA Zone 6bHayden, Idaho frost dates, USDA zone, and a full-year planting calendar, drawn from the nearest NOAA station and tuned to the local season.
In zone 6b, Hayden gardeners can grow many hardy perennials, while the last and first frost still dictate the annual vegetable calendar.
Frost probability
COEUR D'ALENE · 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 Hayden’s own odds, recorded at COEUR D'ALENE.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | May 21 | May 7 | Apr 25 | Sep 23 | Oct 6 | Oct 21 |
| 32°F | May 6 | Apr 22 | Apr 4 | Oct 4 | Oct 18 | Nov 5 |
| 28°F | Apr 21 | Apr 1 | Mar 13 | Oct 15 | Nov 1 | Nov 20 |
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 Hayden, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 40 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.
Hayden planting FAQ
When is the last spring frost in Hayden, ID?
On average, the last spring frost in Hayden is around April 22 (50% probability at 32°F, from 1991–2020 NOAA normals). Wait until after this date to set out tender plants like tomatoes and peppers.
When is the first fall frost in Hayden, ID?
In Hayden, the first 32°F freeze of fall lands around October 18 on average. Time your last harvests and any season-extension cover before it.
What hardiness zone is Hayden in?
Hayden is in USDA hardiness zone 6b. In zone 6b, winters are moderate — most common vegetables grow well in season.
How long is the growing season in Hayden?
Hayden has about 179 frost-free days — a moderate growing season — between the average last spring frost (April 22) and first fall frost (October 18).
When should I plant tomatoes in Hayden?
For Hayden, sow tomatoes indoors about February 25–March 11 and move the seedlings out around April 29, after the last spring frost.
Never miss a window in Hayden
An email when it’s time to start seeds, transplant, and sow — timed to Hayden’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Coeur d'Alene · 7 km
- Rathdrum · 7 km
- Post Falls · 12 km
- Liberty Lake · 25 km
- Spokane Valley · 34 km
- Spokane · 49 km
- Airway Heights · 60 km
- Cheney · 66 km
Frost dates recorded at COEUR D'ALENE, 10 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 Hayden, ID — Frost Dates & Zone 6b." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USC00101956. Retrieved from https://blissgarden.com/idaho/hayden.