Michigan's Lower Peninsula is under freeze watches or warnings until Tuesday that have farmers and home gardeners alike monitoring plants and trees for possible frost damage.
After a recent stretch of warm weather that saw temperatures last week in the 70s and 80s, readings in the 20s and 30s were reported Monday morning.
Freeze watches and warnings were in effect in the Lower Peninsula until Tuesday morning, since cold temperatures were expected Monday night after a daytime warm-up.
"As a Canadian high pressure system builds, we will see mostly sunny and cool conditions today," TV5 meteorologist Catherine Bodak says. "There will be some frosty areas as temps fall below the freezing mark but this afternoon we will climb into the mid 40s."
The National Weather Service says the recent warm weather caused an early green-up, with some plants and trees weeks ahead of their usual growing schedule.
Farmers and home gardeners were urged to protect their plants. Asparagus growers and fruit farmers are among those worried.
"Tonight, we'll drop into the mid 20s so a Freeze Watch has been issued," Bodak said. "Be sure to take action to prevent damage to plants and crops."
Freezing rain was forecast in Michigan's Upper Peninsula.
Copyright 2012 WNEM (Meredith Corporation.) All rights reserved. The Associated Press contributed to this report.