Q. Last fall, I planted about 2 dozen iris corms. I followed the directions explicitly. All the plants appear to be healthy, growing green and straight but no blooms!! I was advised that they need greater sun exposure. I had planted them in an interior courtyard that has sun and shade. Some of my plants were in a planter so I moved them to a southern exposure but they haven’t bloomed. I have the same problem with some day lilies I purchased in LV, green, healthy, lots of leaves but no flowers.
A. Two thoughts come to mind. In many cases iris need a year to get established before they will bloom. Much depends on the size of the rhizome that was planted and how it was planted.
Sometimes late spring freezes can interrupt a flowering cycle as well. Give them another year to get established and my guess they will bloom nicely. Try not to overfertilize them or they may tend to be juvenile and grow leaves with no or few flowers. Fertilize them after blooming rather than before.