When to plant in Ellisville, MO
USDA Zone 7aHere are the average frost dates, USDA hardiness zone, and a month-by-month planting calendar for Ellisville, Missouri — all computed from Ellisville's nearest NOAA weather station.
Zone 7a means many perennials and even some tender shrubs overwinter in Ellisville, while your frost dates still decide when annuals go out.
Frost probability
ST LOUIS SPRT OF S L 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 Ellisville’s own odds, recorded at ST LOUIS SPRT OF S L AP.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | May 7 | Apr 24 | Apr 10 | Sep 30 | Oct 14 | Oct 26 |
| 32°F | Apr 27 | Apr 12 | Mar 28 | Oct 11 | Oct 23 | Nov 5 |
| 28°F | Apr 17 | Mar 31 | Mar 14 | Oct 22 | Nov 3 | Nov 18 |
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 Ellisville, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 15 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.
Ellisville planting FAQ
When is the last spring frost in Ellisville, MO?
Ellisville's average last spring frost falls near April 12 — 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 Ellisville, MO?
The first fall frost in Ellisville typically arrives around October 23 (50% probability at 32°F). Harvest or protect frost-sensitive crops before then.
What hardiness zone is Ellisville in?
Ellisville is in USDA hardiness zone 7a. In zone 7a, winters are moderate — most common vegetables grow well in season.
How long is the growing season in Ellisville?
There are roughly 194 frost-free days in Ellisville (a moderate growing season), running from the average last frost around April 12 to the first fall frost near October 23.
When should I plant tomatoes in Ellisville?
In Ellisville, start tomato seeds indoors around February 15–March 1, then transplant seedlings outdoors around April 19 once the danger of frost has passed.
Never miss a window in Ellisville
An email when it’s time to start seeds, transplant, and sow — timed to Ellisville’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Ballwin · 3 km
- Wildwood · 7 km
- Manchester · 7 km
- Chesterfield · 8 km
- Town and Country · 11 km
- Eureka · 11 km
- Kirkwood · 15 km
- Creve Coeur · 15 km
Frost dates recorded at ST LOUIS SPRT OF S L AP, 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 Ellisville, MO — Frost Dates & Zone 7a." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USW00003966. Retrieved from https://blissgarden.com/missouri/ellisville.