§ When to plant · Michigan · Checked Sept 2026
In Detroit, tender crops like tomatoes and peppers can go out around May 9, and frost has historically passed 9 years in 10 by May 21. Cool-season crops go in from March, and again from July for fall.
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§ 010 · Frost dates
Based on NOAA's 1991–2020 station records, with adjustments for tender crops.
| City · NOAA station | Last frost, on average | Plant tender crops from | Frost is over, 9 of 10 years by | Fall frost possible from |
|---|---|---|---|---|
| Ann ArborANN ARBOR SOUTHEAST · 5 km | May 5 | May 17May 17 | May 29 | Sep 28 |
| DearbornDEARBORN · 2 km | May 1 | May 14May 14 | May 27 | Oct 1 |
| Dearborn HeightsDEARBORN · 5 km | May 1 | May 14May 14 | May 27 | Oct 1 |
| DetroitDEARBORN #2 · 7 km | Apr 27 | May 9May 9 | May 21 | Oct 10 |
| Farmington HillsFARMINGTON · 2 km | May 1 | May 14May 14 | May 27 | Oct 1 |
| FlintFLINT 7W · 6 km | May 3 | May 16May 16 | May 29 | Sep 30 |
| Grand RapidsE GRAND RAPIDS · 4 km | May 6 | May 19May 19 | May 31 | Sep 29 |
| KalamazooKALAMAZOO BATTLE CK INTERNATIONAL AIRPORT · 5 km | Apr 28 | May 11May 11 | May 24 | Oct 2 |
| LansingLANSING CAPITAL CITY AIRPORT · 7 km | May 1 | May 16May 16 | May 31 | Sep 29 |
| LivoniaFARMINGTON · 8 km | May 1 | May 14May 14 | May 27 | Oct 1 |
| NoviFARMINGTON · 10 km | May 1 | May 14May 14 | May 27 | Oct 1 |
| PontiacPONTIAC WWTP · 3 km | Apr 26 | May 9May 9 | May 22 | Oct 7 |
| Rochester HillsPONTIAC WWTP · 8 km | Apr 26 | May 9May 9 | May 22 | Oct 7 |
| SouthfieldFARMINGTON · 8 km | May 1 | May 14May 14 | May 27 | Oct 1 |
| Sterling HeightsMT CLEMENS ANG BASE · 18 km | Apr 30 | May 14May 14 | May 28 | Oct 7 |
| TaylorDETROIT METRO AIRPORT · 5 km | Apr 20 | May 4May 4 | May 18 | Oct 14 |
| TroyPONTIAC WWTP · 11 km | Apr 26 | May 9May 9 | May 22 | Oct 7 |
| WarrenDETROIT CITY AIRPORT · 9 km | Apr 21 | May 5May 5 | May 18 | Oct 17 |
| WestlandDETROIT METRO AIRPORT · 11 km | Apr 20 | May 4May 4 | May 18 | Oct 14 |
| WyomingE GRAND RAPIDS · 9 km | May 6 | May 19May 19 | May 31 | Sep 29 |
Michigan's 20 largest cities (U.S. Census Bureau 2025 estimates), A to Z, each with its nearest NOAA station and the distance to it. Search any town to get its nearest station. "Plant tender crops from" is halfway between the average last frost and the date frost is over 9 years in 10; if frost is in the forecast after it, wait until it passes and nights stay above 36°F.
§ 020 · What to plant
Planting windows from Michigan's Cooperative Extension Service. Filter by season or crop group; every view has its own link.
Link to this view getezina.com/when-to-plant/michigan/
§ 030 · Crop by crop
Each crop has its own link, like #tomatoes. Tender crops wait for the frost dates above; succession crops are sown again every few weeks for a steady harvest.
Beta vulgaris
Cool seasonSuccession sow
Lower Peninsula: plant Apr, and again Aug.
Upper Peninsula: plant Aug.
Ready in about 58 days; sow again every 6 weeks.
Source: Michigan State University Extension (MSU Extension), Gardening in Michigan / Home Gardening program, Michigan Gardening Calendar (Lower Peninsula edition & Upper Peninsula edition). Days to harvest: Ezina crop catalog, from state extension guides.
Brassica oleracea
Cool season
Lower Peninsula: plant May, and again Aug.
Upper Peninsula: start seed indoors Apr; set out transplants May.
Ready in about 95 days from seed, 65 from transplants.
Source: Michigan State University Extension (MSU Extension), Gardening in Michigan / Home Gardening program, Michigan Gardening Calendar (Lower Peninsula edition & Upper Peninsula edition). Days to harvest: Ezina crop catalog, from state extension guides.
Brassica oleracea
Cool season
Lower Peninsula: plant May.
Upper Peninsula: start seed indoors Apr; set out transplants May.
Ready in about 110 days from seed, 80 from transplants.
Source: Michigan State University Extension (MSU Extension), Gardening in Michigan / Home Gardening program, Michigan Gardening Calendar (Lower Peninsula edition & Upper Peninsula edition). Days to harvest: Ezina crop catalog, from state extension guides.
Cucumis melo
Tender
Lower Peninsula: plant Jun.
Ready in about 80 days from seed, 70 from transplants. Tender: in spring, from about May 9 in Detroit. If frost is in the forecast, hold off until it passes and nights stay above 36°F.
Source: Michigan State University Extension (MSU Extension), Gardening in Michigan / Home Gardening program, Michigan Gardening Calendar (Lower Peninsula edition & Upper Peninsula edition). Days to harvest: Ezina crop catalog, from state extension guides.
Daucus carota
Cool seasonSuccession sow
Lower Peninsula: plant Apr.
Upper Peninsula: sow May.
Ready in about 70 days; sow again every 7 weeks.
Source: Michigan State University Extension (MSU Extension), Gardening in Michigan / Home Gardening program, Michigan Gardening Calendar (Lower Peninsula edition & Upper Peninsula edition). Days to harvest: Ezina crop catalog, from state extension guides.
Brassica oleracea
Cool season
Upper Peninsula: start seed indoors Apr; set out transplants May.
Ready in about 95 days from seed, 68 from transplants.
Source: Michigan State University Extension (MSU Extension), Gardening in Michigan / Home Gardening program, Michigan Gardening Calendar (Lower Peninsula edition & Upper Peninsula edition). Days to harvest: Ezina crop catalog, from state extension guides.
Brassica oleracea
Cool season
Lower Peninsula: plant Aug.
Upper Peninsula: plant Aug.
Ready in about 65 days from seed, 55 from transplants.
Source: Michigan State University Extension (MSU Extension), Gardening in Michigan / Home Gardening program, Michigan Gardening Calendar (Lower Peninsula edition & Upper Peninsula edition). Days to harvest: Ezina crop catalog, from state extension guides.
Cucumis sativus
TenderSuccession sow
Lower Peninsula: plant May.
Upper Peninsula: start seed indoors Apr; plant Jun.
Ready in about 58 days from seed, 50 from transplants; sow again every 7 weeks. Tender: in spring, from about May 9 in Detroit. If frost is in the forecast, hold off until it passes and nights stay above 36°F.
Source: Michigan State University Extension (MSU Extension), Gardening in Michigan / Home Gardening program, Michigan Gardening Calendar (Lower Peninsula edition & Upper Peninsula edition). Days to harvest: Ezina crop catalog, from state extension guides.
Solanum melongena
Tender
Lower Peninsula: plant May.
Upper Peninsula: start seed indoors Mar; plant Jun.
Ready in about 75 days from transplants. Tender: in spring, from about May 9 in Detroit. If frost is in the forecast, hold off until it passes and nights stay above 36°F.
Source: Michigan State University Extension (MSU Extension), Gardening in Michigan / Home Gardening program, Michigan Gardening Calendar (Lower Peninsula edition & Upper Peninsula edition). Days to harvest: Ezina crop catalog, from state extension guides.
Allium sativum
Cool seasonOverwinters
Lower Peninsula: plant Sep.
Upper Peninsula: plant Sep.
Ready in about 240 days.
Source: Michigan State University Extension (MSU Extension), Gardening in Michigan / Home Gardening program, Michigan Gardening Calendar (Lower Peninsula edition & Upper Peninsula edition). Days to harvest: Ezina crop catalog, from state extension guides.
Phaseolus vulgaris
TenderSuccession sow
Lower Peninsula: plant May, and again Jun.
Ready in about 55 days; sow again every 5 weeks. Tender: in spring, from about May 9 in Detroit. If frost is in the forecast, hold off until it passes and nights stay above 36°F.
Source: Michigan State University Extension (MSU Extension), Gardening in Michigan / Home Gardening program, Michigan Gardening Calendar (Lower Peninsula edition & Upper Peninsula edition). Days to harvest: Ezina crop catalog, from state extension guides.
Brassica oleracea
Cool season
Lower Peninsula: plant May, and again Aug.
Upper Peninsula: start seed indoors Apr; set out transplants May; plant Jul, and again Aug.
Ready in about 60 days from seed, 45 from transplants.
Source: Michigan State University Extension (MSU Extension), Gardening in Michigan / Home Gardening program, Michigan Gardening Calendar (Lower Peninsula edition & Upper Peninsula edition). Days to harvest: Ezina crop catalog, from state extension guides.
Allium ampeloprasum
Cool season
Upper Peninsula: start seed indoors Mar; set out transplants May.
Ready in about 130 days from seed, 100 from transplants.
Source: Michigan State University Extension (MSU Extension), Gardening in Michigan / Home Gardening program, Michigan Gardening Calendar (Lower Peninsula edition & Upper Peninsula edition). Days to harvest: Ezina crop catalog, from state extension guides.
Lactuca sativa
Cool seasonSuccession sow
Lower Peninsula: plant Mar, and again Jul.
Upper Peninsula: start seed indoors Apr; sow May; plant Jul.
Ready in about 65 days from seed, 50 from transplants; sow again every 6 weeks.
Source: Michigan State University Extension (MSU Extension), Gardening in Michigan / Home Gardening program, Michigan Gardening Calendar (Lower Peninsula edition & Upper Peninsula edition). Days to harvest: Ezina crop catalog, from state extension guides.
Allium cepa
Cool season
Lower Peninsula: plant Apr.
Upper Peninsula: start seed indoors Mar; sow May; set out transplants May.
Ready in about 110 days from seed, 95 from transplants.
Source: Michigan State University Extension (MSU Extension), Gardening in Michigan / Home Gardening program, Michigan Gardening Calendar (Lower Peninsula edition & Upper Peninsula edition). Days to harvest: Ezina crop catalog, from state extension guides.
Pisum sativum
Cool seasonSuccession sow
Lower Peninsula: plant Mar.
Upper Peninsula: sow May.
Ready in about 65 days; sow again every 5 weeks.
Source: Michigan State University Extension (MSU Extension), Gardening in Michigan / Home Gardening program, Michigan Gardening Calendar (Lower Peninsula edition & Upper Peninsula edition). Days to harvest: Ezina crop catalog, from state extension guides.
Capsicum annuum
Tender
Lower Peninsula: plant May.
Upper Peninsula: start seed indoors Mar; plant Jun.
Ready in about 70 days from transplants. Tender: in spring, from about May 9 in Detroit. If frost is in the forecast, hold off until it passes and nights stay above 36°F.
Source: Michigan State University Extension (MSU Extension), Gardening in Michigan / Home Gardening program, Michigan Gardening Calendar (Lower Peninsula edition & Upper Peninsula edition). Days to harvest: Ezina crop catalog, from state extension guides.
Solanum tuberosum
Cool season
Lower Peninsula: plant Apr.
Upper Peninsula: sow May.
Ready in about 100 days.
Source: Michigan State University Extension (MSU Extension), Gardening in Michigan / Home Gardening program, Michigan Gardening Calendar (Lower Peninsula edition & Upper Peninsula edition). Days to harvest: Ezina crop catalog, from state extension guides.
Cucurbita pepo
Tender
Lower Peninsula: plant Jun.
Upper Peninsula: plant Jun.
Ready in about 110 days from seed, 95 from transplants. Tender: in spring, from about May 9 in Detroit. If frost is in the forecast, hold off until it passes and nights stay above 36°F.
Source: Michigan State University Extension (MSU Extension), Gardening in Michigan / Home Gardening program, Michigan Gardening Calendar (Lower Peninsula edition & Upper Peninsula edition). Days to harvest: Ezina crop catalog, from state extension guides.
Raphanus sativus
Cool seasonSuccession sow
Lower Peninsula: plant Apr, and again Jul.
Upper Peninsula: sow May; plant Jul.
Ready in about 28 days; sow again every 3 weeks.
Source: Michigan State University Extension (MSU Extension), Gardening in Michigan / Home Gardening program, Michigan Gardening Calendar (Lower Peninsula edition & Upper Peninsula edition). Days to harvest: Ezina crop catalog, from state extension guides.
Spinacia oleracea
Cool seasonSuccession sow
Lower Peninsula: plant Mar, and again Jul, and again Aug.
Upper Peninsula: sow May; plant Jul, and again Aug.
Ready in about 42 days; sow again every 5 weeks.
Source: Michigan State University Extension (MSU Extension), Gardening in Michigan / Home Gardening program, Michigan Gardening Calendar (Lower Peninsula edition & Upper Peninsula edition). Days to harvest: Ezina crop catalog, from state extension guides.
Cucurbita pepo
TenderSuccession sow
Upper Peninsula: start seed indoors Apr; plant Jun.
Ready in about 50 days from seed, 40 from transplants; sow again every 7 weeks. Tender: in spring, from about May 9 in Detroit. If frost is in the forecast, hold off until it passes and nights stay above 36°F.
Source: Michigan State University Extension (MSU Extension), Gardening in Michigan / Home Gardening program, Michigan Gardening Calendar (Lower Peninsula edition & Upper Peninsula edition). Days to harvest: Ezina crop catalog, from state extension guides.
Zea mays
TenderSuccession sow
Lower Peninsula: plant Jun.
Upper Peninsula: plant Jun.
Ready in about 78 days; sow again every 6 weeks. Tender: in spring, from about May 9 in Detroit. If frost is in the forecast, hold off until it passes and nights stay above 36°F.
Source: Michigan State University Extension (MSU Extension), Gardening in Michigan / Home Gardening program, Michigan Gardening Calendar (Lower Peninsula edition & Upper Peninsula edition). Days to harvest: Ezina crop catalog, from state extension guides.
Beta vulgaris
Cool season
Lower Peninsula: plant Apr.
Ready in about 55 days from seed, 40 from transplants.
Source: Michigan State University Extension (MSU Extension), Gardening in Michigan / Home Gardening program, Michigan Gardening Calendar (Lower Peninsula edition & Upper Peninsula edition). Days to harvest: Ezina crop catalog, from state extension guides.
Solanum lycopersicum
Tender
Lower Peninsula: plant May.
Upper Peninsula: start seed indoors Apr; plant Jun.
Ready in about 75 days from transplants. Tender: in spring, from about May 9 in Detroit. If frost is in the forecast, hold off until it passes and nights stay above 36°F.
Source: Michigan State University Extension (MSU Extension), Gardening in Michigan / Home Gardening program, Michigan Gardening Calendar (Lower Peninsula edition & Upper Peninsula edition). Days to harvest: Ezina crop catalog, from state extension guides.
Brassica rapa
Cool seasonSuccession sow
Lower Peninsula: plant Jul.
Upper Peninsula: plant Jul.
Ready in about 50 days; sow again every 5 weeks.
Source: Michigan State University Extension (MSU Extension), Gardening in Michigan / Home Gardening program, Michigan Gardening Calendar (Lower Peninsula edition & Upper Peninsula edition). Days to harvest: Ezina crop catalog, from state extension guides.
Cucurbita moschata
Tender
Lower Peninsula: plant May.
Upper Peninsula: start seed indoors Apr.
Ready in about 95 days from seed, 80 from transplants. Tender: in spring, from about May 9 in Detroit. If frost is in the forecast, hold off until it passes and nights stay above 36°F.
Source: Michigan State University Extension (MSU Extension), Gardening in Michigan / Home Gardening program, Michigan Gardening Calendar (Lower Peninsula edition & Upper Peninsula edition). Days to harvest: Ezina crop catalog, from state extension guides.
§ 040 · Questions
On average from about April 20 in Taylor to May 6 in Grand Rapids. Frost is over 9 years in 10 by May 18 to May 31.
The extension service lists April to June. Tomatoes are frost-tender, so Ezina dates them from about May 9 in Detroit. If frost is in the forecast, wait until it passes.
The latest fall windows on the calendar close in September. Filter by Fall above to see what is still open.
A zone is the coldest winter night, not a frost date. These dates come from NOAA station records and the extension service.
Yes. Run Ezina Dig on your address and your bed plans are dated from that site's own frost records, on iPhone and Android in the contiguous U.S.