Freezing Cannas... Are they goners?
I am pushing my luck again.
I have been hauling just shy of 50 canna tubers in and out of the house for the last 3 weeks or so, all potted up. On Sunday our weather took a turn for the worse, and I did not put them out. Nor did I put them out yesterday or today. I got to thinking about them today, and went to go check on them and realized that I was short, some where missing! I ran out to the window, and sure enough, there in an open poly house I believed was empty from Saturday night, where 13 of my Cannas!!
Our temps have been down around 2 degrees C to -2 Degrees C, (I suspect about 33-37 degrees F.) and they have been out in this for 3 nights, 2 1/2 days! I am freaking out!
I brought them in. The soil was very cold, but most pots where not frozen, I don't know if this is because they had warmed up during the day or if they never froze (which I find doubtful). Hours later all but a couple that were not in the greatest shape to start with seem nice and firm, the roots look good.
How long do I have to wait to see if they are alright? Is it possible for them to be alright?