It might or might not be too early, depending on where you live and depending on whether or not your area has had its last hard frost, with a hard frost being defined as 28 degrees or below.

Down here in far southcental OK, the average date of our last hard freeze is March 4th or earlier, but for the last 4 years we've had a hard freeze as late as late April or early May. So, the first thing you have to do is figure out the average date of your area's last hard frost. Then, decide if you feel comfortable going ahead and digging them now based on that date of if you'd feel better waiting another week or two. It sort of depends on how much you prefer playing it safe versus taking a risk.

If you don't know the average date of your last hard frost in your area, look at the OKMesonet, which I've linked below. Once you click on the link to go to the Mesonet website, first click on the "First/Last Freeze Days" line on the menu at the left of the screen, and then click on "Avg Date Last Hard Frze". That map will give you an idea of what is typical for your area. Keep in mind that the date it gives you is an average, and half the time the last hard freeze will occur earlier, and half the time it will fall later.

I don't know where you are in OK, but I am not sure we've had our last hard freeze in most of the state although I certainly hope we have.

usually don't consider it safe to divide cannas until the native pecan trees have leafed out, which they have not yet done this year. They only get caught by a late hard freeze about 2 years out of 10 so they're more reliable for me than the mesonet maps.

Dawn

Here is a link that might be useful: OK Mesonet Normals and Extremes

the cannas I have grown could withstand almost anything, except cold wet ground agaist the north side of my house. My lawn sloped toward the north side of the house so it stayed cold and wet all winter and the tubers would rot. All areas that drained well the cannas did fine. In order to have extra plants I would dig and break the tubers apart in the fall and store them in the garage. I never lost any from beening too early, or too late.

If I were going to divide my cannas this spring, I would wait for it to warm up a bit because I dont like digging in cold wet soil. Larry