When can Iris bulbs be put in? And do they have to be dug out every fall? Thank you! ;o)
as in bearded iris tubers or the Dutch Iris with the little round bulb? The former I believe you can plant any time. If you buy them and they are very dry, soak to rehydrate. If the latter, I wait until it cools down so they don't take off prematurely. They don't need to be prechilled like tulips, but they do like it cool.