When to plant in Gladstone, MO
USDA Zone 6bGladstone, Missouri frost dates, USDA zone, and a full-year planting calendar, drawn from the nearest NOAA station and tuned to the local season.
In zone 6b, Gladstone gardeners can grow many hardy perennials, while the last and first frost still dictate the annual vegetable calendar.
Frost probability
KANSAS CITY DOWNTOWN 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 Gladstone’s own odds, recorded at KANSAS CITY DOWNTOWN AP.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | May 2 | Apr 15 | Apr 1 | Oct 12 | Oct 25 | Nov 6 |
| 32°F | Apr 20 | Apr 4 | Mar 17 | Oct 21 | Nov 2 | Nov 16 |
| 28°F | Apr 10 | Mar 26 | Mar 6 | Oct 28 | Nov 11 | Nov 29 |
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 Gladstone, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 20 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.
Gladstone planting FAQ
When is the last spring frost in Gladstone, MO?
Gladstone's average last spring frost falls near April 4 — 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 Gladstone, MO?
The first fall frost in Gladstone typically arrives around November 2 (50% probability at 32°F). Harvest or protect frost-sensitive crops before then.
What hardiness zone is Gladstone in?
Gladstone 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 Gladstone?
Gladstone has about 212 frost-free days — a long growing season — between the average last spring frost (April 4) and first fall frost (November 2).
When should I plant tomatoes in Gladstone?
For Gladstone, sow tomatoes indoors about February 7–February 21 and move the seedlings out around April 11, after the last spring frost.
Never miss a window in Gladstone
An email when it’s time to start seeds, transplant, and sow — timed to Gladstone’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Kansas City · 10 km
- Liberty · 12 km
- Kansas City · 19 km
- Smithville · 20 km
- Independence · 23 km
- Kearney · 23 km
- Merriam · 25 km
- Raytown · 26 km
Frost dates recorded at KANSAS CITY DOWNTOWN AP, 11 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 Gladstone, MO — Frost Dates & Zone 6b." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USW00013988. Retrieved from https://blissgarden.com/missouri/gladstone.