Rosebush, MI 48878 Frost Dates
When can you plant in Rosebush, MI?
Around 04/30 is the usual last spring frost, about 245 days away. The first fall frost typically arrives around 10/20, about 171 frost-free days later.
The USDA Plant Hardiness Zone Map puts Rosebush in Zone 6a (-10 to -5°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
What to do before the first frost
About 8 weeks of growing season left in Rosebush before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
The actual range around Rosebush's last frost
04/30 is the middle of 30 years of NOAA records, not a promise. Plant by 04/17 and you're betting against frost in roughly 9 years out of 10. 05/16 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Rosebush compares
About 171 days separate Rosebush's last and first frost, putting it 28,805 of 40,283 ZIP codes nationally. Within MI, it ranks 302 of 1,153.
Learn more
zone vs. frost date covers why Zone 6a and Rosebush's frost date answer different questions. the frost range covers how to read the range around Rosebush's dates instead of trusting one.