Michigan's planting zones range from USDA Hardiness Zone 4a in the colder northern parts to Zone 6b in the warmer southern and lakeshore areas. The state spans zones 4 through 6, reflecting its continental climate with colder winters in the north and milder conditions in the south
- Northern Lower Peninsula and Upper Peninsula: Zones 4a to 5b, with colder winters and shorter growing seasons.
- Southern and Central Michigan: Zones 5a to 6b, with warmer climates and longer growing seasons.
For example, Detroit is in Zone 6, while many northern areas fall into Zone 4
. This zoning helps gardeners select plants suited to survive Michigan winters and guides planting schedules based on frost dates. In summary, Michigan's planting zones vary significantly by region, primarily between Zones 4a and 6b.
