So many irises!
Last year I tried to thin out the irises in my front garden, I was careful to dig up the entire tuber? or bulb? and roots, and some of the green stems, and the transplanted them. Some of them came up this year, but others didn't .
Is there a better way for me to do it? I get a pretty good # of flowers every year! but the greens kind of look crowded. What time of year is best to do it? ( by the way, I live in the Hudson Valley, NY)