A while back, I had to dig up my irises because voles were decimating them. These irises came from my mom who passed away in 2011 & are precious to me. I have them in containers & need to protect them when there is a frost or freeze. I live in zone 8b about 150 miles from the Gulf coast. What do I need to do? BTW, we do not have many freezing nights & I do not have a garage to put them in.
