When to plant amaranth in Michigan
Michigan spans USDA zones 4b–6b, so the right time to plant amaranth shifts by weeks across the state. The window to sow seed directly outdoors runs from about April 26 in Port Huron to May 26 in Cadillac — below are local dates for 101 cities, each computed from its own frost dates.
| City | Zone | Last frost | First frost | Direct sow |
|---|---|---|---|---|
| Detroit | 6b | April 27 | October 25 | May 4 – May 18 |
| Grand Rapids | 6a | May 6 | October 10 | May 13 – May 27 |
| Warren | 6b | April 21 | October 31 | April 28 – May 12 |
| Sterling Heights | 6b | April 30 | October 24 | May 7 – May 21 |
| Ann Arbor | 6a | May 5 | October 10 | May 12 – May 26 |
| Lansing | 6a | May 1 | October 13 | May 8 – May 22 |
| Dearborn | 6b | May 1 | October 15 | May 8 – May 22 |
| Livonia | 6b | May 1 | October 17 | May 8 – May 22 |
Amaranth in Michigan: FAQ
When can I plant amaranth in Michigan?
Across Michigan, the time to direct-sow amaranth spans roughly April 26 in Port Huron to May 26 in Cadillac, each following that city's local frost dates.
Does the amaranth planting date vary across Michigan?
Yes. Michigan publishes 101 cities with their own frost dates, so the right amaranth planting window shifts by weeks between the warmest and coldest parts of the state — use your city's page for the exact dates.
How long does amaranth take to grow in Michigan?
Amaranth takes about 50–60 days to reach harvest once planted — check that this fits inside your city's frost-free season on its place page.
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