When to plant in Overland Park, KS
USDA Zone 6bHere are the average frost dates, USDA hardiness zone, and a month-by-month planting calendar for Overland Park, Kansas — all computed from Overland Park's nearest NOAA weather station.
Zone 6b means Overland Park sees real winter cold, but a good range of perennials survive; the frost dates above govern when annual vegetables go out.
Frost probability
OLATHE 3E · 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 Overland Park’s own odds, recorded at OLATHE 3E.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | May 2 | Apr 19 | Apr 5 | Oct 2 | Oct 20 | Oct 31 |
| 32°F | Apr 24 | Apr 10 | Mar 27 | Oct 13 | Oct 29 | Nov 12 |
| 28°F | Apr 17 | Mar 31 | Mar 13 | Oct 23 | Nov 6 | Nov 25 |
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 Overland Park, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 18 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.
Overland Park planting FAQ
When is the last spring frost in Overland Park, KS?
Overland Park's average last spring frost falls near April 10 — 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 Overland Park, KS?
The first fall frost in Overland Park typically arrives around October 29 (50% probability at 32°F). Harvest or protect frost-sensitive crops before then.
What hardiness zone is Overland Park in?
Overland Park 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 Overland Park?
There are roughly 202 frost-free days in Overland Park (a moderate growing season), running from the average last frost around April 10 to the first fall frost near October 29.
When should I plant tomatoes in Overland Park?
In Overland Park, start tomato seeds indoors around February 13–February 27, then transplant seedlings outdoors around April 17 once the danger of frost has passed.
Never miss a window in Overland Park
An email when it’s time to start seeds, transplant, and sow — timed to Overland Park’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reachFrost dates recorded at OLATHE 3E, 6 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 Overland Park, KS — Frost Dates & Zone 6b." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USC00145972. Retrieved from https://blissgarden.com/kansas/overland-park.