When to plant in Crystal, MN
USDA Zone 5aHere are the average frost dates, USDA hardiness zone, and a month-by-month planting calendar for Crystal, Minnesota — all computed from Crystal's nearest NOAA weather station.
In zone 5a, Crystal gardeners can grow many hardy perennials, while the last and first frost still dictate the annual vegetable calendar.
Frost probability
MPLS CRYSTAL AP · 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 Crystal’s own odds, recorded at MPLS CRYSTAL AP.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | May 26 | May 9 | Apr 27 | Sep 18 | Sep 29 | Oct 11 |
| 32°F | May 17 | Apr 30 | Apr 17 | Sep 26 | Oct 8 | Oct 21 |
| 28°F | May 5 | Apr 20 | Apr 5 | Oct 4 | Oct 18 | Nov 1 |
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 Crystal, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 11 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.
Crystal planting FAQ
When is the last spring frost in Crystal, MN?
Plan for the last spring frost in Crystal around April 30 (the date it has a 50% chance of a 32°F freeze). Anything frost-sensitive should go out after it.
When is the first fall frost in Crystal, MN?
Expect Crystal's first fall frost near October 8 — a 50% chance of 32°F by that date. Bring in or cover tender crops ahead of it.
What hardiness zone is Crystal in?
Crystal is in USDA hardiness zone 5a. In zone 5a, winters are cold — pick cold-hardy varieties and protect tender crops.
How long is the growing season in Crystal?
Crystal has about 161 frost-free days — a moderate growing season — between the average last spring frost (April 30) and first fall frost (October 8).
When should I plant tomatoes in Crystal?
For Crystal, sow tomatoes indoors about March 5–March 19 and move the seedlings out around May 7, after the last spring frost.
Never miss a window in Crystal
An email when it’s time to start seeds, transplant, and sow — timed to Crystal’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- New Hope · 2 km
- Robbinsdale · 3 km
- Brooklyn Center · 5 km
- Golden Valley · 5 km
- Brooklyn Park · 8 km
- Plymouth · 8 km
- Columbia Heights · 9 km
- Fridley · 9 km
Frost dates recorded at MPLS CRYSTAL AP, 3 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 Crystal, MN — Frost Dates & Zone 5a." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USW00094960. Retrieved from https://blissgarden.com/minnesota/crystal.