My irises are new-ish plants, given to me by family and my husband's boss last fall. I planted them quickly so they would bloom this year. Only one did, but the others are healthy with nice foliage. My one iris to bloom budded at the end of April and opened at the beginning of May. I noticed irises around town blooming around the same time. My irises are growing in full sun, but I know that my mother's iris (in Indiana) grow in partial sun, under her lilac bushes.

I have Iris's in two different places in my yard and neither one bloommed this year. I have no reason as to why.

My iris bloomed a while back. The ones that end up shaded don't bloom well for me so I move them to a sunnier spot. What didn't bloom were my lilacs and I noticed that none of my akebias bloomed either (3 different varieties). I've heard from a number of people about their lilacs not blooming and noticed that there were none (or very few) in any yards in Mont. or Howard counties this spring.

Could what you have be candy lily or blackberry lily? Neither have the tuber that iris have and do better in more shade than iris does. They also have similar foliage. My blackberry lily has not bloomed yet this year. My irises bloomed back in May.