When to plant in Saint-Ambroise (near Saint-Charles-Borromée), QC
Planting dates worked out from Saint-Ambroise (near Saint-Charles-Borromée)'s own frost records, not a generic zone chart.
Station used: Joliette Ville · 11.6 km away · station 56 m, town 92 m. How we match towns to stations
Plan your garden.
Planting dates for common crops
| Crop | Start indoors | Plant out or sow | Harvest from |
|---|---|---|---|
| Tomato | Mar 25 – Apr 8 | May 20 – Jun 3 | Jul 14 |
| Sweet pepper | Mar 11 – Mar 25 | May 20 – Jun 3 | Jul 19 |
| Lettuce (leaf) | Mar 13 – Mar 20 | Apr 17 – May 1 | May 27 |
| Peas | — | Apr 17 – May 15 | Jun 11 |
| Bush beans | — | May 13 – Jun 3 | Jul 2 |
| Carrot | — | Apr 24 – Jun 5 | Jun 23 |
| Beet | — | Apr 24 – Jun 5 | Jun 13 |
| Potato | — | Apr 24 – May 15 | Jul 3 |
| Kale | Mar 13 – Mar 27 | Apr 24 – May 8 | Jun 6 |
| Broccoli | Mar 6 – Mar 20 | Apr 17 – May 8 | Jun 16 |
| Cucumber | Apr 22 – Apr 29 | May 20 – Jun 3 | Jul 9 |
| Summer squash and zucchini | Apr 22 – Apr 29 | May 20 – Jun 3 | Jul 4 |
| Winter squash | Apr 22 – Apr 29 | May 20 – Jun 3 | Aug 8 |
| Sweet corn | — | May 13 – Jun 3 | Jul 12 |
| Onion (from sets) | — | Apr 17 – May 8 | Jul 16 |
| Garlic | — | Sep 19 – Oct 17 (fall) | following summer |
| Spinach | — | Apr 17 – May 15 | May 25 |
| Basil | Apr 8 – Apr 22 | May 20 – Jun 3 | Jul 16 |
Plan all 65 crops for Saint-Ambroise (near Saint-Charles-Borromée)
Saint-Ambroise (near Saint-Charles-Borromée)'s weather over time
How the growing season has shifted here, year by year, from the station's own records.
See the data as a table
| Year | Last spring frost |
|---|---|
| 1967 | May 23 |
| 1968 | May 8 |
| 1969 | May 27 |
| 1970 | May 7 |
| 1972 | May 8 |
| 1973 | Apr 15 |
| 1974 | May 5 |
| 1975 | Apr 28 |
| 1976 | May 7 |
| 1977 | May 4 |
| 1979 | May 6 |
| 1980 | Apr 19 |
| 1981 | May 18 |
| 1982 | May 10 |
| 1983 | May 18 |
| 1984 | Apr 22 |
| 1985 | May 9 |
| 1986 | May 4 |
| 1987 | May 16 |
| 1988 | May 15 |
| 1989 | Apr 29 |
| 1990 | May 3 |
| 1991 | May 9 |
| 1993 | Apr 28 |
| 1994 | May 3 |
| 1995 | May 7 |
| 1996 | Apr 29 |
| 1997 | May 8 |
| 1998 | Apr 27 |
| 1999 | May 11 |
| 2000 | May 19 |
| 2001 | Apr 29 |
| 2002 | May 25 |
| 2003 | May 3 |
| 2004 | May 9 |
| 2005 | May 13 |
| 2006 | May 7 |
| 2007 | Apr 26 |
| 2008 | May 1 |
| 2009 | May 26 |
| 2010 | May 11 |
See the data as a table
| Year | Frost-free days |
|---|---|
| 1967 | 137 |
| 1968 | 150 |
| 1969 | 114 |
| 1970 | 151 |
| 1972 | 145 |
| 1974 | 141 |
| 1975 | 157 |
| 1976 | 140 |
| 1977 | 156 |
| 1979 | 136 |
| 1980 | 162 |
| 1981 | 135 |
| 1982 | 152 |
| 1984 | 157 |
| 1985 | 151 |
| 1986 | 155 |
| 1987 | 131 |
| 1988 | 144 |
| 1989 | 162 |
| 1990 | 169 |
| 1991 | 133 |
| 1993 | 154 |
| 1994 | 150 |
| 1995 | 139 |
| 1996 | 157 |
| 1997 | 138 |
| 1998 | 149 |
| 1999 | 145 |
| 2000 | 128 |
| 2001 | 161 |
| 2002 | 135 |
| 2003 | 152 |
| 2004 | 148 |
| 2005 | 160 |
| 2006 | 152 |
| 2007 | 169 |
| 2008 | 158 |
| 2009 | 138 |
| 2010 | 144 |
See the data as a table
| Year | Growing-season temperature |
|---|---|
| 1967 | 13.8 °C |
| 1968 | 14.9 °C |
| 1969 | 14.3 °C |
| 1970 | 15.0 °C |
| 1972 | 13.9 °C |
| 1974 | 14.0 °C |
| 1975 | 15.8 °C |
| 1976 | 15.0 °C |
| 1977 | 14.9 °C |
| 1979 | 15.2 °C |
| 1980 | 15.0 °C |
| 1981 | 15.6 °C |
| 1982 | 14.4 °C |
| 1984 | 15.5 °C |
| 1985 | 14.8 °C |
| 1986 | 14.6 °C |
| 1987 | 15.7 °C |
| 1988 | 15.5 °C |
| 1989 | 15.5 °C |
| 1990 | 15.4 °C |
| 1991 | 15.7 °C |
| 1993 | 15.2 °C |
| 1994 | 14.9 °C |
| 1995 | 15.2 °C |
| 1996 | 15.2 °C |
| 1997 | 14.5 °C |
| 1998 | 16.2 °C |
| 1999 | 16.3 °C |
| 2000 | 14.2 °C |
| 2001 | 16.0 °C |
| 2002 | 15.7 °C |
| 2004 | 15.1 °C |
| 2005 | 16.3 °C |
| 2006 | 16.1 °C |
| 2007 | 15.7 °C |
| 2008 | 15.7 °C |
| 2009 | 15.4 °C |
What this means for you: Since 1967, Saint-Ambroise (near Saint-Charles-Borromée)'s last spring frost has stayed at about the same time of year. The frost-free season has grown by about 2 days per decade. Year-to-year swings are large, so keep using the safe date rather than the trend.
Source: daily records from Joliette Ville (NOAA GHCN-Daily, from Environment and Climate Change Canada). Years with too many missing days are left out.