When Plants Say 'Brrrrr!' By Dan Gill • Dec 7, 2013 ShareTwitter Facebook Google+ Email Tender shrubs covered with blankets. Covers weighted to the ground keep heat released from the soil from escaping on cold nights. Credit LSU AgCenter We have had some unusually cold weather unusually early in the season this year. Freezes down to the mid 20s have done a lot of damage, in particular to tropical plants in our landscapes. Listen Listening... / 4:09 Related Program: Bayou Garden Tags: freezeView the discussion thread.