When to plant in Saint-Alexandre, QC

Planting dates worked out from Saint-Alexandre's own frost records, not a generic zone chart.

Safe to plant out

May 20

1 year in 10 has a later frost

Average last frost

May 9

about a 50% chance of a later one

Average first fall frost

Oct 5

1 year in 10 by Sep 22

Frost-free days

146

median, 1991–2020

Station used: Chelsea · 3.2 km away · station 112 m, town 74 m. How we match towns to stations

This season

Plan your garden.

Build my Saint-Alexandre plan

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 15 – Mar 22	Apr 19 – May 3	May 29
Peas	—	Apr 19 – May 17	Jun 13
Bush beans	—	May 13 – Jun 3	Jul 2
Carrot	—	Apr 26 – Jun 7	Jun 25
Beet	—	Apr 26 – Jun 7	Jun 15
Potato	—	Apr 26 – May 17	Jul 5
Kale	Mar 15 – Mar 29	Apr 26 – May 10	Jun 8
Broccoli	Mar 8 – Mar 22	Apr 19 – May 10	Jun 18
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 19 – May 10	Jul 18
Garlic	—	Sep 21 – Oct 19 (fall)	following summer
Spinach	—	Apr 19 – May 17	May 27
Basil	Apr 8 – Apr 22	May 20 – Jun 3	Jul 16

Plan all 65 crops for Saint-Alexandre

Saint-Alexandre'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
1928	Apr 28
1929	Apr 20
1930	Apr 29
1931	May 2
1932	May 6
1933	May 15
1934	Apr 30
1935	May 5
1936	May 21
1937	May 1
1938	Apr 16
1939	May 18
1940	May 13
1941	Apr 24
1942	May 9
1943	May 2
1944	May 19
1945	May 11
1947	May 10
1948	Apr 28
1949	May 11
1950	May 14
1951	May 10
1952	Apr 24
1953	May 3
1954	May 7
1955	May 10
1956	May 26
1957	May 18
1958	May 10
1959	May 18
1960	May 3
1961	May 31
1962	May 8
1963	May 11
1964	Apr 19
1965	May 5
1966	May 11
1967	May 13
1968	May 7
1969	May 26
1970	May 7
1971	May 15
1972	May 6
1973	Apr 25
1974	May 5
1975	Apr 29
1976	May 8
1977	May 4
1978	May 4
1979	May 6
1980	Jun 10
1981	May 18
1982	Apr 28
1983	May 18
1984	Apr 23
1985	May 9
1986	May 4
1987	May 4
1988	Apr 27
1989	Apr 29
1990	Apr 19
1991	May 19
1992	May 7
1993	Apr 28
1994	May 3
1995	May 7
1996	Apr 29
1997	May 8
1999	Apr 27
2000	May 20
2001	May 13
2002	May 25
2004	May 9
2005	May 13
2006	May 7
2007	Apr 26
2008	May 5
2009	May 26
2010	May 11
2017	May 9
2018	May 12
2020	May 14
2021	May 28
2022	May 8
2023	May 18
2024	Apr 27
2025	May 1

Each year's frost-free daysLong-term trend

See the data as a table

Year	Frost-free days
1928	168
1929	175
1930	172
1931	159
1932	159
1933	151
1934	153
1935	153
1936	130
1937	160
1938	173
1939	149
1940	155
1941	175
1942	142
1943	146
1944	136
1945	141
1947	135
1948	170
1949	165
1950	133
1951	155
1952	162
1953	143
1954	152
1955	164
1956	117
1957	132
1958	148
1959	121
1960	151
1961	126
1962	166
1963	142
1964	164
1965	144
1966	159
1967	146
1968	172
1969	148
1970	163
1971	150
1972	156
1973	176
1974	148
1975	156
1977	155
1978	157
1979	155
1980	121
1981	145
1982	178
1983	144
1984	156
1985	154
1986	155
1987	157
1988	165
1989	162
1990	183
1991	133
1992	146
1993	155
1994	160
1995	175
1996	157
1997	162
1999	160
2000	127
2001	147
2002	131
2004	146
2005	160
2006	145
2007	169
2008	136
2009	128
2010	144
2018	154
2020	129
2021	147
2022	148
2023	164
2024	171
2025	142

Each year's average temperature, April to SeptemberLong-term trend

See the data as a table

Year	Growing-season temperature
1928	15.1 °C
1929	14.8 °C
1930	15.0 °C
1931	15.9 °C
1932	14.4 °C
1933	15.0 °C
1934	14.6 °C
1935	14.2 °C
1936	13.8 °C
1938	15.0 °C
1939	14.2 °C
1940	14.3 °C
1941	15.8 °C
1942	15.2 °C
1943	13.7 °C
1944	15.6 °C
1945	14.6 °C
1947	14.3 °C
1948	14.9 °C
1949	15.7 °C
1950	13.5 °C
1951	14.4 °C
1952	15.1 °C
1953	15.0 °C
1954	13.6 °C
1955	16.2 °C
1956	12.6 °C
1957	14.2 °C
1958	13.4 °C
1959	15.6 °C
1960	14.9 °C
1961	14.3 °C
1962	14.0 °C
1963	14.0 °C
1964	14.9 °C
1965	14.1 °C
1966	14.4 °C
1967	14.4 °C
1968	15.3 °C
1969	14.7 °C
1970	15.2 °C
1971	14.7 °C
1972	14.1 °C
1973	15.3 °C
1974	14.2 °C
1975	15.7 °C
1977	15.1 °C
1978	14.9 °C
1979	15.1 °C
1980	15.1 °C
1981	15.2 °C
1982	14.8 °C
1983	15.3 °C
1984	15.1 °C
1985	14.8 °C
1986	14.9 °C
1987	15.7 °C
1988	15.6 °C
1989	15.3 °C
1990	15.1 °C
1991	16.1 °C
1992	14.0 °C
1993	15.3 °C
1994	15.0 °C
1995	15.5 °C
1996	15.1 °C
1997	14.8 °C
1999	15.9 °C
2000	13.4 °C
2004	14.7 °C
2005	16.7 °C
2006	15.7 °C
2007	15.3 °C
2008	15.1 °C
2009	14.4 °C
2010	16.1 °C
2020	16.1 °C
2021	16.7 °C
2022	16.1 °C
2023	16.2 °C
2024	16.8 °C
2025	16.3 °C

What this means for you: Since 1928, Saint-Alexandre's last spring frost has stayed at about the same time of year. Year-to-year swings are large, so keep using the safe date rather than the trend.

Source: daily records from Chelsea (NOAA GHCN-Daily, from Environment and Climate Change Canada). Years with too many missing days are left out.

Nearby towns

Chelsea Gatineau Rockcliffe Park, ON Le Plateau Cantley New Edinburgh, ON