When to plant in Bolivar, MO
USDA Zone 6bHere are the average frost dates, USDA hardiness zone, and a month-by-month planting calendar for Bolivar, Missouri — all computed from Bolivar's nearest NOAA weather station.
Zone 6b means Bolivar sees real winter cold, but a good range of perennials survive; the frost dates above govern when annual vegetables go out.
Frost probability
BOLIVAR 1 NE · 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 Bolivar’s own odds, recorded at BOLIVAR 1 NE.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | May 12 | Apr 27 | Apr 10 | Sep 28 | Oct 13 | Oct 26 |
| 32°F | May 2 | Apr 14 | Mar 29 | Oct 8 | Oct 23 | Nov 4 |
| 28°F | Apr 18 | Apr 1 | Mar 17 | Oct 18 | Nov 1 | Nov 16 |
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 Bolivar, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 33 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.
Bolivar planting FAQ
When is the last spring frost in Bolivar, MO?
Bolivar's average last spring frost falls near April 14 — 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 Bolivar, MO?
Expect Bolivar's first fall frost near October 23 — a 50% chance of 32°F by that date. Bring in or cover tender crops ahead of it.
What hardiness zone is Bolivar in?
Bolivar 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 Bolivar?
There are roughly 192 frost-free days in Bolivar (a moderate growing season), running from the average last frost around April 14 to the first fall frost near October 23.
When should I plant tomatoes in Bolivar?
In Bolivar, start tomato seeds indoors around February 17–March 3, then transplant seedlings outdoors around April 21 once the danger of frost has passed.
Never miss a window in Bolivar
An email when it’s time to start seeds, transplant, and sow — timed to Bolivar’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reachFrost dates recorded at BOLIVAR 1 NE, 2 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 Bolivar, MO — Frost Dates & Zone 6b." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USC00230789. Retrieved from https://blissgarden.com/missouri/bolivar.