When to plant in Trowbridge Park, MI

Planting dates worked out from Trowbridge Park's own frost records, not a generic zone chart.

Last spring frost

Early · riskyApr 239 years in 10 still get a later frost
TypicalMay 6about half of years get a later frost
Safe to plant outMay 221 year in 10 gets a later frost

Hardy crops like peas and spinach are timed from the typical date. Wait for the safe date before planting out tomatoes, peppers and squash.

First fall frost

EarlySep 301 year in 10 has frost by then
TypicalOct 22about half of years have had frost
LateNov 99 years in 10 have had frost by then

A typical year has 166 frost-free days. Plan for tender crops to be ripe by the early date.

Station used: Marquette · 4.6 km away · station 203 m, town 241 m. How we match towns to stations

This season

Plan your garden.

Build my Trowbridge Park plan

Planting dates for common crops

Crop	Start indoors	Plant out or sow	Harvest from
Tomato	Apr 2 – Apr 16	May 28 – Jun 11	Jul 22
Sweet pepper	Mar 19 – Apr 2	May 28 – Jun 11	Jul 27
Lettuce (leaf)	Mar 21 – Mar 28	Apr 25 – May 9	Jun 4
Peas	—	Apr 25 – May 23	Jun 19
Bush beans	—	May 22 – Jun 12	Jul 11
Carrot	—	May 6 – Jun 17	Jul 5
Beet	—	May 6 – Jun 17	Jun 25
Potato	—	May 6 – May 27	Jul 15
Kale	Mar 21 – Apr 4	May 2 – May 16	Jun 14
Broccoli	Mar 14 – Mar 28	Apr 25 – May 16	Jun 24
Cucumber	Apr 30 – May 7	May 28 – Jun 11	Jul 17
Summer squash and zucchini	Apr 30 – May 7	May 28 – Jun 11	Jul 12
Winter squash	Apr 30 – May 7	May 28 – Jun 11	Aug 16
Sweet corn	—	May 22 – Jun 12	Jul 21
Onion (from sets)	—	Apr 25 – May 16	Jul 24
Garlic	—	Sep 27 – Oct 25 (fall)	following summer
Spinach	—	Apr 25 – May 23	Jun 2
Basil	Apr 16 – Apr 30	May 28 – Jun 11	Jul 24

Plan all 65 crops for Trowbridge Park

Trowbridge Park'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
1861	Jun 17
1862	Jun 22
1863	May 15
1878	May 18
1879	Jun 5
1880	Apr 30
1881	Jun 6
1882	May 16
1883	May 23
1884	May 28
1885	May 28
1886	May 25
1887	Apr 26
1888	May 18
1889	May 30
1890	May 16
1891	Jun 5
1892	May 7
1948	May 19
1949	May 20
1950	May 16
1951	May 13
1952	May 3
1953	May 13
1954	May 26
1955	May 17
1956	May 24
1957	May 16
1958	May 9
1959	May 15
1960	May 13
1961	May 17
1962	May 9
1963	May 23
1964	Apr 25
1965	Apr 28
1966	May 13
1967	May 22
1968	May 5
1969	May 26
1970	May 6
1971	May 12
1972	May 8
1973	May 3
1974	May 9
1975	Apr 25
1976	May 7
1977	May 9
1978	May 4
1980	Jun 8
1981	May 18
1982	May 9
1983	May 27
1984	May 16
1985	May 2
1986	May 3
1987	May 4
1988	May 18
1989	May 11
1990	May 13
1991	May 19
1992	May 25
1993	May 1
1994	May 27
1995	Apr 26
1996	May 30
1997	May 16
1998	Apr 28
1999	Apr 24
2000	Apr 24
2001	Apr 17
2004	May 4
2005	May 3
2006	Apr 28
2007	Apr 16
2008	May 4
2009	Apr 29
2010	Apr 23
2011	Apr 23
2012	Apr 29
2013	Apr 24
2014	May 17
2015	May 20
2016	May 20
2017	May 9
2018	May 12
2019	May 8
2020	May 13
2021	Apr 27
2022	May 5
2023	May 3
2024	Apr 29

Each year's frost-free daysLong-term trend

See the data as a table

Year	Frost-free days
1861	104
1862	71
1878	153
1879	139
1880	159
1881	125
1882	169
1883	127
1884	146
1885	128
1886	128
1887	170
1888	140
1889	129
1890	157
1891	136
1892	175
1948	150
1949	156
1950	159
1951	163
1952	152
1953	171
1954	133
1955	159
1956	166
1957	161
1958	181
1959	151
1960	158
1961	138
1962	166
1963	162
1964	162
1965	150
1966	152
1967	149
1968	172
1969	147
1970	165
1971	172
1972	160
1973	184
1974	144
1975	176
1976	161
1977	166
1978	162
1980	126
1981	137
1982	160
1983	146
1984	132
1985	145
1986	159
1987	158
1988	145
1989	135
1990	150
1991	131
1992	140
1993	151
1994	158
1995	149
1996	132
1997	157
1998	188
1999	161
2000	186
2001	193
2004	187
2005	191
2006	166
2007	204
2008	170
2009	164
2010	188
2011	207
2012	190
2014	166
2015	132
2016	175
2017	172
2018	153
2019	173
2020	156
2021	188
2022	190
2023	178
2024	208

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

See the data as a table

Year	Growing-season temperature
1861	12.8 °C
1862	12.7 °C
1878	14.8 °C
1879	13.9 °C
1880	14.0 °C
1881	13.4 °C
1882	11.9 °C
1883	11.4 °C
1884	12.2 °C
1885	11.6 °C
1886	13.0 °C
1887	13.4 °C
1888	11.5 °C
1889	12.9 °C
1890	12.3 °C
1891	13.2 °C
1892	12.9 °C
1948	14.2 °C
1949	14.7 °C
1950	11.9 °C
1951	12.8 °C
1952	14.6 °C
1953	13.9 °C
1954	12.9 °C
1955	15.8 °C
1956	12.1 °C
1957	13.7 °C
1958	13.4 °C
1959	14.9 °C
1960	13.5 °C
1961	13.5 °C
1962	12.9 °C
1963	14.0 °C
1964	13.9 °C
1965	12.9 °C
1966	13.8 °C
1967	13.0 °C
1968	13.5 °C
1969	14.1 °C
1970	14.0 °C
1971	13.6 °C
1972	12.4 °C
1973	13.8 °C
1974	13.2 °C
1975	14.0 °C
1976	14.3 °C
1977	14.4 °C
1978	13.9 °C
1980	13.6 °C
1981	13.2 °C
1982	12.5 °C
1983	14.0 °C
1984	13.5 °C
1985	13.3 °C
1986	13.8 °C
1987	15.2 °C
1988	14.8 °C
1989	13.3 °C
1990	13.5 °C
1991	14.8 °C
1992	12.7 °C
1993	12.9 °C
1994	13.3 °C
1995	14.1 °C
1996	12.3 °C
1997	13.6 °C
1998	16.2 °C
1999	15.5 °C
2000	14.7 °C
2001	15.9 °C
2003	13.0 °C
2004	12.8 °C
2005	15.2 °C
2006	15.0 °C
2007	15.0 °C
2008	13.7 °C
2009	13.5 °C
2010	15.6 °C
2011	14.6 °C
2012	15.7 °C
2013	13.1 °C
2014	12.2 °C
2015	14.0 °C
2016	14.0 °C
2017	13.3 °C
2018	13.1 °C
2019	13.3 °C
2020	13.8 °C
2021	14.8 °C
2022	13.7 °C
2023	13.5 °C
2024	14.9 °C

What this means for you: Since 1861, Trowbridge Park's last spring frost has come about 2 days 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 Marquette (NOAA GHCN-Daily). Years with too many missing days are left out.

Nearby towns

Marquette Harvey Negaunee Ishpeming West Ishpeming K. I. Sawyer Air Force Base