When to plant in Campbell, MO
Planting dates worked out from Campbell's own frost records, not a generic zone chart.
Safe to plant out
Apr 11
1 year in 10 has a later frost
Average last frost
Mar 29
about a 50% chance of a later one
Average first fall frost
Nov 4
1 year in 10 by Oct 25
Frost-free days
217
median, 1991–2020
Station used: Malden Muni Ap · 14.1 km away · station 88 m, town 96 m. How we match towns to stations
This season
Plan your garden.
Planting dates for common crops
| Crop | Start indoors | Plant out or sow | Harvest from |
|---|---|---|---|
| Tomato | Feb 14 – Feb 28 | Apr 11 – Apr 25 | Jun 5 |
| Sweet pepper | Jan 31 – Feb 14 | Apr 11 – Apr 25 | Jun 10 |
| Lettuce (leaf) | Jan 25 – Feb 1 | Mar 1 – Mar 15 | Apr 10 |
| Peas | — | Feb 27 – Mar 27 | Apr 23 |
| Bush beans | — | Apr 4 – Apr 25 | May 24 |
| Carrot | — | Mar 9 – Apr 20 | May 8 |
| Beet | — | Mar 9 – Apr 20 | Apr 28 |
| Potato | — | Mar 9 – Mar 30 | May 18 |
| Kale | Jan 23 – Feb 6 | Mar 6 – Mar 20 | Apr 18 |
| Broccoli | Jan 18 – Feb 1 | Mar 1 – Mar 22 | Apr 30 |
| Cucumber | Mar 14 – Mar 21 | Apr 11 – Apr 25 | May 31 |
| Summer squash and zucchini | Mar 14 – Mar 21 | Apr 11 – Apr 25 | May 26 |
| Winter squash | Mar 14 – Mar 21 | Apr 11 – Apr 25 | Jun 30 |
| Sweet corn | — | Apr 4 – Apr 25 | Jun 3 |
| Onion (from sets) | — | Mar 1 – Mar 22 | May 30 |
| Garlic | — | Oct 21 – Nov 18 (fall) | following summer |
| Spinach | — | Feb 27 – Mar 27 | Apr 6 |
| Basil | Feb 28 – Mar 14 | Apr 11 – Apr 25 | Jun 7 |
Campbell's weather over time
How the growing season has shifted here, year by year, from the station's own records.
Each year's last spring frostLong-term trend
See the data as a table
| Year | Last spring frost |
|---|---|
| 1961 | Mar 11 |
| 1962 | Apr 16 |
| 1963 | Mar 22 |
| 1964 | Apr 9 |
| 1965 | Mar 28 |
| 1966 | Apr 10 |
| 1967 | Mar 19 |
| 1968 | Apr 6 |
| 1969 | Apr 1 |
| 1970 | Mar 27 |
| 1971 | Apr 7 |
| 1972 | Apr 9 |
| 1973 | Apr 11 |
| 1974 | Apr 9 |
| 1975 | Apr 5 |
| 1976 | Mar 18 |
| 1977 | Mar 22 |
| 1978 | Mar 26 |
| 1981 | Mar 22 |
| 1982 | Apr 9 |
| 1985 | Mar 18 |
| 1987 | Apr 6 |
| 1988 | Mar 20 |
| 1989 | Apr 11 |
| 1990 | Apr 12 |
| 1992 | Apr 3 |
| 1993 | Apr 3 |
| 1994 | Apr 7 |
| 1995 | Apr 5 |
| 1996 | Apr 16 |
| 1998 | Mar 13 |
| 1999 | Mar 27 |
| 2000 | Mar 12 |
| 2002 | Apr 4 |
| 2003 | Mar 31 |
| 2004 | Mar 14 |
| 2005 | Mar 20 |
| 2006 | Mar 28 |
| 2007 | Apr 9 |
| 2008 | Apr 15 |
| 2010 | Mar 6 |
| 2013 | Apr 3 |
| 2023 | Mar 21 |
| 2024 | Mar 20 |
| 2025 | Mar 22 |
| 2026 | Mar 18 |
Each year's frost-free daysLong-term trend
See the data as a table
| Year | Frost-free days |
|---|---|
| 1961 | 228 |
| 1962 | 189 |
| 1963 | 222 |
| 1964 | 224 |
| 1965 | 209 |
| 1966 | 205 |
| 1967 | 222 |
| 1968 | 202 |
| 1969 | 209 |
| 1970 | 221 |
| 1972 | 193 |
| 1974 | 194 |
| 1975 | 222 |
| 1976 | 213 |
| 1977 | 232 |
| 1985 | 201 |
| 1987 | 180 |
| 1988 | 244 |
| 1989 | 191 |
| 1990 | 207 |
| 1992 | 217 |
| 1993 | 207 |
| 1994 | 229 |
| 1995 | 211 |
| 1996 | 199 |
| 1998 | 224 |
| 1999 | 211 |
| 2000 | 210 |
| 2002 | 226 |
| 2003 | 229 |
| 2004 | 255 |
| 2005 | 219 |
| 2006 | 218 |
| 2007 | 211 |
| 2008 | 195 |
| 2023 | 223 |
| 2024 | 250 |
| 2025 | 232 |
Each year's average temperature, April to SeptemberLong-term trend
See the data as a table
| Year | Growing-season temperature |
|---|---|
| 1961 | 21.1 °C |
| 1962 | 22.6 °C |
| 1963 | 22.5 °C |
| 1964 | 23.3 °C |
| 1965 | 22.9 °C |
| 1966 | 21.8 °C |
| 1967 | 21.2 °C |
| 1968 | 22.4 °C |
| 1969 | 22.9 °C |
| 1970 | 23.0 °C |
| 1971 | 22.2 °C |
| 1972 | 22.1 °C |
| 1974 | 21.4 °C |
| 1975 | 22.1 °C |
| 1976 | 21.7 °C |
| 1977 | 24.0 °C |
| 1978 | 22.8 °C |
| 1982 | 22.5 °C |
| 1985 | 22.8 °C |
| 1986 | 24.1 °C |
| 1987 | 23.7 °C |
| 1988 | 23.2 °C |
| 1989 | 22.0 °C |
| 1990 | 22.5 °C |
| 1991 | 23.8 °C |
| 1992 | 21.3 °C |
| 1993 | 22.2 °C |
| 1994 | 21.8 °C |
| 1995 | 22.3 °C |
| 1996 | 22.0 °C |
| 1999 | 22.9 °C |
| 2000 | 22.5 °C |
| 2001 | 23.1 °C |
| 2002 | 23.0 °C |
| 2003 | 21.8 °C |
| 2004 | 22.3 °C |
| 2005 | 23.3 °C |
| 2006 | 23.0 °C |
| 2007 | 23.5 °C |
| 2008 | 22.1 °C |
| 2010 | 24.5 °C |
| 2012 | 24.6 °C |
| 2013 | 22.5 °C |
| 2023 | 23.2 °C |
| 2024 | 23.8 °C |
| 2025 | 23.6 °C |
What this means for you: Since 1961, Campbell's last spring frost has come about 1 day earlier per decade, on average. The frost-free season has grown by about 3 days per decade. Year-to-year swings are large, so keep using the safe date rather than the trend.
Source: daily records from Malden Muni Ap (NOAA GHCN-Daily). Years with too many missing days are left out.