I only recall us freezing deeply three times, so just the opposite, Rick. We have a unique weather pattern here on the lake. We normally get heavy snowfall before the ground freezes, so the snow acts like a blanket and keeps the ground from freezing more. of course the top inch or two is frozen just from being in contact with the snow.
I dig, divide and replant beardless irises here right through December. Then the snow comes, but the roots never freeze.
