When to plant in Roxboro, QC
Planting dates worked out from Roxboro's own frost records, not a generic zone chart.
Safe to plant out
Apr 29
1 year in 10 has a later frost
Average last frost
Apr 23
about a 50% chance of a later one
Average first fall frost
Oct 21
1 year in 10 by Oct 6
Frost-free days
181
median, 1991–2020
Station used: Ste Genevieve · 3.4 km away · station 23 m, town 21 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 | Mar 11 – Mar 25 | May 6 – May 20 | Jun 30 |
| Sweet pepper | Feb 25 – Mar 11 | May 6 – May 20 | Jul 5 |
| Lettuce (leaf) | Mar 9 – Mar 16 | Apr 13 – Apr 27 | May 23 |
| Peas | — | Apr 13 – May 11 | Jun 7 |
| Bush beans | — | Apr 30 – May 21 | Jun 19 |
| Carrot | — | Apr 20 – Jun 1 | Jun 19 |
| Beet | — | Apr 20 – Jun 1 | Jun 9 |
| Potato | — | Apr 20 – May 11 | Jun 29 |
| Kale | Mar 9 – Mar 23 | Apr 20 – May 4 | Jun 2 |
| Broccoli | Mar 2 – Mar 16 | Apr 13 – May 4 | Jun 12 |
| Cucumber | Apr 8 – Apr 15 | May 6 – May 20 | Jun 25 |
| Summer squash and zucchini | Apr 8 – Apr 15 | May 6 – May 20 | Jun 20 |
| Winter squash | Apr 8 – Apr 15 | May 6 – May 20 | Jul 25 |
| Sweet corn | — | Apr 30 – May 21 | Jun 29 |
| Onion (from sets) | — | Apr 13 – May 4 | Jul 12 |
| Garlic | — | Sep 30 – Oct 28 (fall) | following summer |
| Spinach | — | Apr 13 – May 11 | May 21 |
| Basil | Mar 25 – Apr 8 | May 6 – May 20 | Jul 2 |
Roxboro'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 |
|---|---|
| 1953 | May 3 |
| 1954 | Apr 24 |
| 1955 | Apr 13 |
| 1956 | May 17 |
| 1957 | May 17 |
| 1958 | May 6 |
| 1959 | Apr 28 |
| 1960 | May 3 |
| 1961 | May 31 |
| 1964 | May 21 |
| 1965 | Apr 25 |
| 1966 | May 10 |
| 1967 | May 8 |
| 1968 | Apr 29 |
| 1969 | Apr 20 |
| 1970 | May 6 |
| 1971 | Apr 24 |
| 1972 | Apr 28 |
| 1973 | Apr 14 |
| 1974 | May 6 |
| 1975 | Apr 22 |
| 1976 | May 7 |
| 1977 | Apr 29 |
| 1978 | May 2 |
| 1979 | Apr 20 |
| 1980 | Apr 19 |
| 1981 | Apr 23 |
| 1982 | Apr 22 |
| 1983 | Apr 22 |
| 1984 | Apr 22 |
| 1985 | Apr 20 |
| 1986 | May 4 |
| 1987 | Apr 14 |
| 1988 | Apr 23 |
| 1989 | Apr 23 |
| 1990 | Apr 19 |
| 1999 | Apr 24 |
| 2000 | Apr 18 |
| 2001 | Apr 20 |
| 2002 | Apr 29 |
| 2003 | Apr 25 |
| 2004 | May 8 |
| 2005 | Apr 22 |
| 2006 | Apr 28 |
| 2007 | Apr 17 |
| 2008 | Apr 14 |
| 2009 | Apr 19 |
| 2011 | Apr 22 |
| 2012 | Apr 28 |
| 2013 | Apr 22 |
| 2014 | Apr 20 |
Each year's frost-free daysLong-term trend
See the data as a table
| Year | Frost-free days |
|---|---|
| 1954 | 190 |
| 1955 | 194 |
| 1956 | 132 |
| 1957 | 156 |
| 1958 | 152 |
| 1959 | 168 |
| 1960 | 169 |
| 1961 | 144 |
| 1964 | 138 |
| 1966 | 168 |
| 1968 | 159 |
| 1969 | 184 |
| 1970 | 165 |
| 1971 | 171 |
| 1972 | 164 |
| 1973 | 187 |
| 1974 | 140 |
| 1975 | 191 |
| 1976 | 157 |
| 1977 | 161 |
| 1978 | 146 |
| 1979 | 171 |
| 1981 | 170 |
| 1982 | 170 |
| 1983 | 180 |
| 1984 | 165 |
| 1985 | 183 |
| 1986 | 158 |
| 1987 | 179 |
| 1988 | 179 |
| 1989 | 169 |
| 1990 | 183 |
| 1999 | 177 |
| 2000 | 163 |
| 2001 | 190 |
| 2002 | 168 |
| 2003 | 164 |
| 2004 | 149 |
| 2005 | 181 |
| 2006 | 176 |
| 2007 | 194 |
| 2008 | 186 |
| 2009 | 175 |
| 2011 | 189 |
| 2012 | 190 |
| 2013 | 189 |
| 2014 | 201 |
Each year's average temperature, April to SeptemberLong-term trend
See the data as a table
| Year | Growing-season temperature |
|---|---|
| 1953 | 15.8 °C |
| 1954 | 14.4 °C |
| 1955 | 16.7 °C |
| 1956 | 13.9 °C |
| 1957 | 15.5 °C |
| 1958 | 15.1 °C |
| 1959 | 16.7 °C |
| 1961 | 15.5 °C |
| 1964 | 15.6 °C |
| 1965 | 15.0 °C |
| 1966 | 15.3 °C |
| 1967 | 15.1 °C |
| 1968 | 15.4 °C |
| 1969 | 15.4 °C |
| 1970 | 15.6 °C |
| 1971 | 15.3 °C |
| 1972 | 14.9 °C |
| 1973 | 16.1 °C |
| 1974 | 14.8 °C |
| 1975 | 16.3 °C |
| 1976 | 15.4 °C |
| 1977 | 15.5 °C |
| 1978 | 14.8 °C |
| 1979 | 15.8 °C |
| 1981 | 15.7 °C |
| 1982 | 14.9 °C |
| 1983 | 15.8 °C |
| 1984 | 15.5 °C |
| 1985 | 15.2 °C |
| 1986 | 15.1 °C |
| 1987 | 16.2 °C |
| 1988 | 16.2 °C |
| 1989 | 16.0 °C |
| 1990 | 15.5 °C |
| 1999 | 17.6 °C |
| 2000 | 15.1 °C |
| 2001 | 17.1 °C |
| 2002 | 16.6 °C |
| 2003 | 16.4 °C |
| 2004 | 15.7 °C |
| 2005 | 16.5 °C |
| 2006 | 16.6 °C |
| 2007 | 16.2 °C |
| 2008 | 16.9 °C |
| 2009 | 14.8 °C |
| 2011 | 17.5 °C |
| 2012 | 18.2 °C |
What this means for you: Since 1953, Roxboro's last spring frost has come about 2 days earlier per decade, on average. The frost-free season has grown by about 4 days per decade. Year-to-year swings are large, so keep using the safe date rather than the trend.
Source: daily records from Ste Genevieve (NOAA GHCN-Daily, from Environment and Climate Change Canada). Years with too many missing days are left out.