You'd think such a pretty flower would require a lot of fuss. But butterfly iris (Dietes vegeta) ranks as one of the easiest perennials in the garden. It accepts sun to bright shade. Once established, ...

Q. My butterfly iris looks healthy but flowers poorly. My fall-planted lobelia and sweet alyssum have not grown and have few flowers. -M.Z., Houston A. Although tolerant of poorer soils, butterfly ...

A lot of African irises (Dietes), also called butterfly irises, were damaged by the freezes in December, and gardeners cut them back hard in spring to remove the damaged foliage. I would give the ...