Not your time zone. Your plant hardiness zone. That is an important part of plant survival.
Most of west Michigan falls in Zone 5 according to the USDA Map.
That means when selecting perennials, the plant must say it is hardy to Zone 5 or below in order for it to survive a Michigan winter. Anything listed for 6 or above needs a warmer climate than we can offer. (Plants listed 6 might make it on the lakeshore, where the lake keeps things a little warmer).
It also means that when sowing your vegetable garden and planting your annual flowers, you need to be sure you plant when it is safe to plant for Zone 5. After the last spring freeze/frost dates. The weather forcast can help you determine when that date will be this year. Or, a rule of thumb followed by many in Michigan is to wait until after Memorial Day before planting tender annuals and vegetable gardens.
This spring find your zone and enjoy the fruits of your labors!