When to plant in Waconia, MN
USDA Zone 4bHere are the average frost dates, USDA hardiness zone, and a month-by-month planting calendar for Waconia, Minnesota — all computed from Waconia's nearest NOAA weather station.
Zone 4b is cold — in Waconia, most perennials must be fully hardy, and your frost dates set a tight window for tender annual vegetables.
Frost probability
CHASKA 2NW · 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 Waconia’s own odds, recorded at CHASKA 2NW.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | May 29 | May 16 | May 4 | Sep 15 | Sep 27 | Oct 8 |
| 32°F | May 19 | May 5 | Apr 21 | Sep 22 | Oct 5 | Oct 18 |
| 28°F | May 6 | Apr 23 | Apr 8 | Oct 1 | Oct 16 | Oct 28 |
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 Waconia, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 23 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.
Waconia planting FAQ
When is the last spring frost in Waconia, MN?
Plan for the last spring frost in Waconia around May 5 (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 Waconia, MN?
In Waconia, the first 32°F freeze of fall lands around October 5 on average. Time your last harvests and any season-extension cover before it.
What hardiness zone is Waconia in?
Waconia is in USDA hardiness zone 4b. In zone 4b, winters are cold — pick cold-hardy varieties and protect tender crops.
How long is the growing season in Waconia?
There are roughly 153 frost-free days in Waconia (a moderate growing season), running from the average last frost around May 5 to the first fall frost near October 5.
When should I plant tomatoes in Waconia?
In Waconia, start tomato seeds indoors around March 10–March 24, then transplant seedlings outdoors around May 12 once the danger of frost has passed.
Never miss a window in Waconia
An email when it’s time to start seeds, transplant, and sow — timed to Waconia’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Victoria · 10 km
- Chaska · 14 km
- Chanhassen · 18 km
- Shakopee · 26 km
- Eden Prairie · 26 km
- Minnetonka · 28 km
- Prior Lake · 30 km
- Hopkins · 32 km
Frost dates recorded at CHASKA 2NW, 13 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 Waconia, MN — Frost Dates & Zone 4b." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USC00211468. Retrieved from https://blissgarden.com/minnesota/waconia.