When to plant in Glastonbury Center, CT

Planting dates worked out from Glastonbury Center'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 16

about a 50% chance of a later one

Average first fall frost

Oct 20

1 year in 10 by Oct 9

Frost-free days

188

median, 1991–2020

Station used: Hartford Brainard Fld · 5.7 km away · station 4 m, town 21 m. How we match towns to stations

This season

Plan your garden.

Build my Glastonbury Center plan

Planting dates for common crops

Crop	Start indoors	Plant out or sow	Harvest from
Tomato	Mar 4 – Mar 18	Apr 29 – May 13	Jun 23
Sweet pepper	Feb 18 – Mar 4	Apr 29 – May 13	Jun 28
Lettuce (leaf)	Feb 22 – Mar 1	Mar 29 – Apr 12	May 8
Peas	—	Mar 29 – Apr 26	May 23
Bush beans	—	Apr 22 – May 13	Jun 11
Carrot	—	Apr 6 – May 18	Jun 5
Beet	—	Apr 6 – May 18	May 26
Potato	—	Apr 6 – Apr 27	Jun 15
Kale	Feb 22 – Mar 8	Apr 5 – Apr 19	May 18
Broccoli	Feb 15 – Mar 1	Mar 29 – Apr 19	May 28
Cucumber	Apr 1 – Apr 8	Apr 29 – May 13	Jun 18
Summer squash and zucchini	Apr 1 – Apr 8	Apr 29 – May 13	Jun 13
Winter squash	Apr 1 – Apr 8	Apr 29 – May 13	Jul 18
Sweet corn	—	Apr 22 – May 13	Jun 21
Onion (from sets)	—	Mar 29 – Apr 19	Jun 27
Garlic	—	Oct 6 – Nov 3 (fall)	following summer
Spinach	—	Mar 29 – Apr 26	May 6
Basil	Mar 18 – Apr 1	Apr 29 – May 13	Jun 25

Plan all 65 crops for Glastonbury Center

Glastonbury Center'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
1920	Apr 11
1921	Apr 18
1922	Apr 22
1923	Apr 19
1924	Apr 3
1925	Apr 21
1926	Apr 18
1927	Apr 11
1928	Apr 21
1929	Apr 14
1930	Apr 24
1931	Apr 12
1932	Apr 17
1933	Apr 28
1934	Apr 29
1935	Apr 17
1936	Apr 25
1937	Apr 4
1938	Apr 11
1939	Apr 13
1940	Apr 28
1941	May 3
1942	Apr 14
1943	May 2
1944	Apr 29
1945	Apr 24
1946	Apr 18
1947	May 10
1948	May 2
1949	Apr 29
1950	May 9
1951	Apr 24
1952	Apr 12
1953	Mar 22
1954	Apr 10
1955	Apr 9
1956	May 25
1957	Apr 16
1958	Apr 12
1959	Apr 24
1960	May 3
1961	May 6
1962	May 13
1963	May 13
1964	May 3
1965	Apr 24
1966	May 11
1967	Apr 26
1968	May 8
1969	Apr 21
1970	Apr 14
1971	Apr 25
1972	Apr 27
1973	Apr 15
1974	Apr 20
1975	Apr 22
1976	Apr 13
1977	May 10
1978	May 4
1979	Apr 20
1980	Apr 24
1981	Apr 21
1982	Apr 29
1983	May 17
1984	May 18
1985	Apr 13
1988	Apr 19
1989	Apr 23
1990	Apr 13
1991	Apr 19
1992	Apr 18
1993	Apr 7
1994	Apr 23
1996	May 15
1998	Apr 11
2000	Apr 13
2001	May 7
2002	Apr 27
2003	Apr 18
2004	Apr 10
2005	Mar 31
2006	Apr 10
2007	Apr 11
2008	May 1
2009	Apr 10
2010	Mar 28
2011	Apr 22
2012	Apr 7
2013	Apr 7
2014	Apr 21
2015	Apr 12
2016	Apr 13
2017	Apr 9
2018	Apr 22
2019	Apr 5
2020	Apr 25
2021	Apr 4
2022	Apr 18
2023	Apr 9
2024	Apr 8

Each year's frost-free daysLong-term trend

See the data as a table

Year	Frost-free days
1920	213
1921	190
1922	179
1923	195
1924	193
1925	171
1926	186
1927	202
1928	188
1929	178
1930	179
1931	207
1932	200
1933	179
1934	186
1935	173
1936	182
1937	194
1938	203
1940	151
1941	149
1942	196
1944	168
1945	162
1946	186
1947	139
1948	166
1949	181
1950	159
1951	158
1952	182
1953	200
1954	180
1955	195
1956	118
1957	163
1958	176
1959	147
1960	162
1961	162
1962	130
1963	133
1964	155
1965	156
1966	162
1967	179
1968	175
1969	177
1970	188
1971	193
1972	166
1973	189
1974	156
1975	191
1976	168
1977	150
1978	164
1979	173
1980	155
1981	172
1982	164
1988	172
1989	169
1990	196
1991	184
1992	164
1993	186
1994	170
1998	188
2000	178
2001	154
2002	170
2003	184
2004	198
2005	210
2006	187
2007	200
2008	171
2009	191
2010	218
2011	190
2012	188
2013	200
2014	192
2015	188
2016	195
2017	212
2018	179
2019	211
2020	175
2021	213
2022	193
2023	206
2024	208

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

See the data as a table

Year	Growing-season temperature
1920	17.0 °C
1921	18.8 °C
1922	18.1 °C
1923	17.6 °C
1924	16.9 °C
1925	18.1 °C
1926	16.6 °C
1927	16.2 °C
1928	17.4 °C
1929	17.8 °C
1930	18.4 °C
1931	18.6 °C
1932	17.6 °C
1933	18.3 °C
1934	18.3 °C
1935	17.3 °C
1936	17.7 °C
1937	18.1 °C
1938	17.8 °C
1939	18.1 °C
1940	16.4 °C
1941	18.1 °C
1942	18.2 °C
1943	17.6 °C
1944	18.3 °C
1945	18.1 °C
1946	17.0 °C
1947	17.4 °C
1948	17.6 °C
1949	18.7 °C
1950	16.7 °C
1951	17.8 °C
1952	18.4 °C
1953	18.2 °C
1954	17.2 °C
1955	18.4 °C
1956	16.1 °C
1957	17.5 °C
1958	16.8 °C
1959	18.4 °C
1960	17.5 °C
1961	17.4 °C
1962	16.3 °C
1963	16.3 °C
1964	17.2 °C
1965	17.3 °C
1966	17.0 °C
1967	16.8 °C
1968	17.8 °C
1969	17.8 °C
1970	17.9 °C
1971	17.6 °C
1972	16.8 °C
1973	18.4 °C
1974	17.5 °C
1975	17.5 °C
1976	18.0 °C
1977	17.7 °C
1978	16.9 °C
1979	17.9 °C
1980	17.2 °C
1981	18.5 °C
1982	17.2 °C
1983	18.0 °C
1984	16.5 °C
1985	18.2 °C
1988	18.4 °C
1989	17.7 °C
1990	18.0 °C
1991	19.4 °C
1992	17.0 °C
1993	18.7 °C
1994	18.6 °C
1998	18.7 °C
2000	17.6 °C
2001	18.6 °C
2002	18.8 °C
2003	17.7 °C
2004	18.7 °C
2005	19.2 °C
2006	18.7 °C
2007	18.7 °C
2008	18.6 °C
2009	18.5 °C
2010	20.6 °C
2011	19.8 °C
2012	19.5 °C
2013	18.8 °C
2014	18.1 °C
2015	19.4 °C
2016	20.3 °C
2017	18.9 °C
2018	19.2 °C
2019	18.9 °C
2020	19.3 °C
2021	19.6 °C
2022	20.0 °C
2023	19.3 °C
2024	19.7 °C

What this means for you: Since 1920, Glastonbury Center's last spring frost has stayed at about the same time of year. The frost-free season has grown by about 1 days per decade. Year-to-year swings are large, so keep using the safe date rather than the trend.

Source: daily records from Hartford Brainard Fld (NOAA GHCN-Daily). Years with too many missing days are left out.

Nearby towns

Glastonbury Wethersfield East Hartford Hartford Newington Manchester