Published: Dec 22, 2012 5:04 PM EST

SOUTHWEST FLORIDA - People around southwest Florida are being advised to cover their plants and bring their pets inside overnight.

The National Weather Service has issued a Freeze Warning from 11 p.m. Saturday until 9 a.m. Sunday. That includes DeSoto, Hardee and Highlands Counties.

There's also a Frost Advisory overnight for Sarasota, Charlotte, Lee, Collier, Hendry and Glades counties.