‘You all posted online that now was the time to divide and replant crowded irises. How do I do that?” — R.W. The first exposure to iris for a lot of us was likely in our grandparent’s garden. They ...

Iris in bloom (top), iris borer larva in an iris rhizome (bottom) Q • My irises didn’t bloom well this year, and a friend recommended that I divide them. When is the best time to do that? Any tips on ...

Question: I understand this is the time of year to divide irises. How should I do it? Is this heat going to be a problem? Beth, Tulsa. Answer: I presume you are referring to bearded irises, the showy, ...