When to plant in The Pinery, CO
USDA Zone 5bEverything below — frost dates, hardiness zone, and what to plant when in The Pinery, Colorado — is derived from the closest NOAA station with complete climate normals.
In zone 5b, The Pinery gardeners can grow many hardy perennials, while the last and first frost still dictate the annual vegetable calendar.
Frost probability
PARKER · 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 The Pinery’s own odds, recorded at PARKER.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | Jun 2 | May 20 | May 8 | Sep 12 | Sep 25 | Oct 6 |
| 32°F | May 23 | May 9 | Apr 27 | Sep 21 | Oct 3 | Oct 15 |
| 28°F | May 12 | Apr 29 | Apr 15 | Sep 29 | Oct 12 | Oct 23 |
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 The Pinery, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 14 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.
The Pinery planting FAQ
When is the last spring frost in The Pinery, CO?
On average, the last spring frost in The Pinery is around May 9 (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 The Pinery, CO?
The first fall frost in The Pinery typically arrives around October 3 (50% probability at 32°F). Harvest or protect frost-sensitive crops before then.
What hardiness zone is The Pinery in?
The Pinery is in USDA hardiness zone 5b. In zone 5b, winters are cold — pick cold-hardy varieties and protect tender crops.
How long is the growing season in The Pinery?
The Pinery has about 147 frost-free days — a short growing season — between the average last spring frost (May 9) and first fall frost (October 3).
When should I plant tomatoes in The Pinery?
For The Pinery, sow tomatoes indoors about March 14–March 28 and move the seedlings out around May 16, after the last spring frost.
Never miss a window in The Pinery
An email when it’s time to start seeds, transplant, and sow — timed to The Pinery’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Parker · 7 km
- Castle Pines · 11 km
- Castle Rock · 12 km
- Lone Tree · 14 km
- Centennial · 19 km
- Cherry Creek · 20 km
- Highlands Ranch · 22 km
- Greenwood Village · 23 km
Frost dates recorded at PARKER, 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 The Pinery, CO — Frost Dates & Zone 5b." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USC00056323. Retrieved from https://blissgarden.com/colorado/the-pinery.