When to plant in Laval, QC
Planting dates worked out from Laval's own frost records, not a generic zone chart.
Safe to plant out
May 8
1 year in 10 has a later frost
Average last frost
Apr 29
about a 50% chance of a later one
Average first fall frost
Oct 14
1 year in 10 by Sep 30
Frost-free days
166
median, 1991–2020
Station used: Montreal/pierre Elliott Trudea · 12.3 km away · station 36 m, town 34 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 14 – Mar 28 | May 9 – May 23 | Jul 3 |
| Sweet pepper | Feb 28 – Mar 14 | May 9 – May 23 | Jul 8 |
| Lettuce (leaf) | Mar 10 – Mar 17 | Apr 14 – Apr 28 | May 24 |
| Peas | — | Apr 14 – May 12 | Jun 8 |
| Bush beans | — | May 4 – May 25 | Jun 23 |
| Carrot | — | Apr 22 – Jun 3 | Jun 21 |
| Beet | — | Apr 22 – Jun 3 | Jun 11 |
| Potato | — | Apr 22 – May 13 | Jul 1 |
| Kale | Mar 10 – Mar 24 | Apr 21 – May 5 | Jun 3 |
| Broccoli | Mar 3 – Mar 17 | Apr 14 – May 5 | Jun 13 |
| Cucumber | Apr 11 – Apr 18 | May 9 – May 23 | Jun 28 |
| Summer squash and zucchini | Apr 11 – Apr 18 | May 9 – May 23 | Jun 23 |
| Winter squash | Apr 11 – Apr 18 | May 9 – May 23 | Jul 28 |
| Sweet corn | — | May 4 – May 25 | Jul 3 |
| Onion (from sets) | — | Apr 14 – May 5 | Jul 13 |
| Garlic | — | Sep 27 – Oct 25 (fall) | following summer |
| Spinach | — | Apr 14 – May 12 | May 22 |
| Basil | Mar 28 – Apr 11 | May 9 – May 23 | Jul 5 |
Laval'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 |
|---|---|
| 1942 | Apr 16 |
| 1943 | May 1 |
| 1944 | May 18 |
| 1945 | Apr 24 |
| 1946 | May 3 |
| 1947 | May 15 |
| 1948 | Apr 27 |
| 1949 | May 11 |
| 1950 | May 14 |
| 1951 | Apr 6 |
| 1952 | May 5 |
| 1953 | May 3 |
| 1954 | Apr 24 |
| 1955 | Apr 20 |
| 1956 | May 24 |
| 1957 | May 19 |
| 1958 | May 6 |
| 1959 | Apr 28 |
| 1960 | Apr 26 |
| 1961 | May 31 |
| 1962 | May 8 |
| 1963 | May 11 |
| 1964 | Apr 19 |
| 1965 | Apr 25 |
| 1966 | May 10 |
| 1967 | May 6 |
| 1968 | May 7 |
| 1969 | May 27 |
| 1970 | May 7 |
| 1971 | Apr 24 |
| 1972 | Apr 28 |
| 1973 | Apr 15 |
| 1974 | May 5 |
| 1975 | Apr 28 |
| 1976 | Apr 24 |
| 1977 | May 8 |
| 1978 | May 4 |
| 1979 | May 6 |
| 1980 | Apr 22 |
| 1981 | May 18 |
| 1982 | Apr 22 |
| 1983 | Apr 27 |
| 1984 | Apr 22 |
| 1985 | Apr 18 |
| 1986 | May 4 |
| 1987 | Apr 25 |
| 1988 | Apr 23 |
| 1989 | Apr 29 |
| 1990 | Apr 22 |
| 1991 | Apr 14 |
| 1992 | May 4 |
| 1994 | May 3 |
| 1995 | May 8 |
| 1996 | Apr 27 |
| 1997 | May 8 |
| 1998 | Apr 27 |
| 1999 | Apr 25 |
| 2000 | Apr 18 |
| 2001 | Apr 29 |
| 2002 | Apr 27 |
| 2003 | Apr 25 |
| 2004 | May 8 |
| 2005 | May 13 |
| 2006 | May 7 |
| 2007 | Apr 11 |
| 2008 | Apr 30 |
| 2009 | Apr 19 |
| 2010 | May 10 |
| 2011 | Apr 22 |
| 2012 | Apr 30 |
Each year's frost-free daysLong-term trend
See the data as a table
| Year | Frost-free days |
|---|---|
| 1942 | 165 |
| 1943 | 147 |
| 1944 | 137 |
| 1945 | 158 |
| 1946 | 167 |
| 1947 | 133 |
| 1948 | 159 |
| 1949 | 157 |
| 1950 | 130 |
| 1951 | 176 |
| 1952 | 157 |
| 1953 | 157 |
| 1954 | 165 |
| 1955 | 164 |
| 1956 | 125 |
| 1957 | 154 |
| 1958 | 152 |
| 1959 | 168 |
| 1960 | 175 |
| 1961 | 136 |
| 1962 | 159 |
| 1963 | 150 |
| 1964 | 162 |
| 1965 | 161 |
| 1966 | 139 |
| 1967 | 153 |
| 1968 | 151 |
| 1969 | 146 |
| 1970 | 161 |
| 1971 | 171 |
| 1972 | 163 |
| 1973 | 186 |
| 1974 | 140 |
| 1975 | 157 |
| 1976 | 169 |
| 1977 | 151 |
| 1978 | 143 |
| 1979 | 155 |
| 1980 | 158 |
| 1981 | 135 |
| 1982 | 171 |
| 1983 | 165 |
| 1984 | 157 |
| 1985 | 175 |
| 1986 | 155 |
| 1987 | 166 |
| 1988 | 172 |
| 1989 | 162 |
| 1990 | 179 |
| 1991 | 168 |
| 1992 | 142 |
| 1994 | 160 |
| 1995 | 173 |
| 1996 | 158 |
| 1997 | 146 |
| 1998 | 191 |
| 1999 | 163 |
| 2000 | 162 |
| 2001 | 180 |
| 2002 | 170 |
| 2003 | 175 |
| 2004 | 149 |
| 2005 | 159 |
| 2006 | 166 |
| 2007 | 199 |
| 2008 | 170 |
| 2009 | 177 |
| 2010 | 165 |
| 2011 | 187 |
| 2012 | 164 |
Each year's average temperature, April to SeptemberLong-term trend
See the data as a table
| Year | Growing-season temperature |
|---|---|
| 1942 | 16.4 °C |
| 1943 | 14.8 °C |
| 1944 | 16.4 °C |
| 1945 | 16.0 °C |
| 1946 | 15.4 °C |
| 1947 | 15.3 °C |
| 1948 | 16.2 °C |
| 1949 | 16.6 °C |
| 1950 | 14.8 °C |
| 1951 | 15.4 °C |
| 1952 | 16.2 °C |
| 1953 | 16.4 °C |
| 1954 | 14.8 °C |
| 1955 | 17.3 °C |
| 1956 | 13.9 °C |
| 1957 | 15.9 °C |
| 1958 | 15.1 °C |
| 1959 | 17.3 °C |
| 1960 | 16.4 °C |
| 1961 | 15.8 °C |
| 1962 | 15.6 °C |
| 1963 | 15.0 °C |
| 1964 | 15.6 °C |
| 1965 | 15.1 °C |
| 1966 | 15.0 °C |
| 1967 | 14.7 °C |
| 1968 | 15.3 °C |
| 1969 | 14.8 °C |
| 1970 | 15.5 °C |
| 1971 | 15.0 °C |
| 1972 | 14.6 °C |
| 1973 | 15.9 °C |
| 1974 | 14.3 °C |
| 1975 | 15.9 °C |
| 1976 | 15.1 °C |
| 1977 | 14.9 °C |
| 1978 | 14.8 °C |
| 1979 | 15.4 °C |
| 1980 | 14.9 °C |
| 1981 | 15.2 °C |
| 1982 | 14.8 °C |
| 1983 | 15.7 °C |
| 1984 | 15.5 °C |
| 1985 | 15.1 °C |
| 1986 | 15.0 °C |
| 1987 | 16.1 °C |
| 1988 | 16.0 °C |
| 1989 | 15.8 °C |
| 1990 | 15.3 °C |
| 1991 | 16.2 °C |
| 1992 | 14.7 °C |
| 1993 | 15.6 °C |
| 1994 | 15.2 °C |
| 1995 | 15.6 °C |
| 1996 | 15.4 °C |
| 1997 | 14.9 °C |
| 1998 | 17.2 °C |
| 1999 | 17.5 °C |
| 2000 | 15.1 °C |
| 2001 | 16.9 °C |
| 2002 | 16.3 °C |
| 2003 | 16.3 °C |
| 2004 | 15.7 °C |
| 2005 | 17.1 °C |
| 2006 | 16.4 °C |
| 2007 | 16.1 °C |
| 2008 | 16.4 °C |
| 2009 | 15.7 °C |
| 2010 | 17.3 °C |
| 2011 | 17.0 °C |
| 2012 | 17.2 °C |
What this means for you: Since 1942, Laval'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 Montreal/pierre Elliott Trudea (NOAA GHCN-Daily, from Environment and Climate Change Canada). Years with too many missing days are left out.