So we had the temperature get down to 18 the other night (that's a record here) and tomorrow it'll be almost 70. So they're still growing babies, and flags are getting bigger...

anyone???

I think they will do just fine. But you must remember that we still have a couple of cold months to go. As the old saying goes here in Texas if you don't like the weather stick around for a few days.

My irises have a bunch of small plants coming up too and none of them have died back yet. Usually the end of January and first of Feb. are our coldest months.
The only thing that's going to hurt your irises is if we have a freeze just about the time they get ready to bloom. Then the freeze will get alot of the buds/blooms.

I wouldn't really worry too much if I were you.
Happy Gardening, Marian

P.S. I have alot of plants coming up that should be sleeping too.