iris blooming in fall? Home › Forums › Flower-Garden Questions › Annuals and Perennials › iris blooming in fall? This topic contains 0 replies, has 1 voice, and was last updated by Anonymous 8 years ago. Viewing 1 post (of 1 total) Author Posts October 9, 2008 at 3:32 pm #28537 Anonymous I have beautiful bearded Iris that barely bloomed this spring. Suddenly, it’s September/October and the iris are blooming! These are old-fashioned iris, NOT the new-fangled kind that are supposed to have two seasons. What gives? JulieMike Author Posts Viewing 1 post (of 1 total) You must be logged in to reply to this topic.