Mine weren't blooming at the nursery, but took a year to bloom once they were planted. You could try a bloom boosting fertilizer and see if that forces them a little.

This reminds me of one of the "DUMBEST QUESTIONS NEWBIE GARDENER'S ASK" ...not you.....me. Decades ago I had seen the white version of this flower at Miami Metro Zoo and called to ask someone about it. The very nice gentleman told me all about the African Iris and before I could stop myself(fixating on the word African?) I asked "Will it grow here?" (cue crickets chirping) I caught myself and laughed and apologized.Did I really think they would only grow at the zoo? Did the zoo have it's own zone? Was I confusing it with Disney? Dumb!

Assuming you are referring to Dietes or what are most commonly called African iris, they will most certainly not be winter hardy for you. They are evergreen in their typical environment and form large clumps (as you can tell from their height) and I would think not the easiest plant to accommodate indoors overwinter. Pot them up and store them somewhere with lots of light and where the temperature stays above 40F - a greenhouse would be ideal. Bloom time in their normal zones is quite lengthy, often producing flowers throughout the growing season, although each flower lasts only a single day. In my zone, they are only marginally hardy and even in a protected microclimate, didn't thrive. Only a couple of blooms in the 4-5 years I had them before they gave up the ghost.

I just received the most WONDERFUL box from Miss Sue! It was so big, it took 2 kids to carry it. :) And MERCY, I just about fell out of my chair when I saw how much it cost to mail! Prices are getting ridiculous!! I tried to keep track of everything as I unwrapped them, but I had 4 little helpers (the girls helped me...the boys couldn't have cared less- they know they're going to be recruited to help plant later on! LoL!) so I didn't get everything written down. But everything looks great, nothing is wilted! Which was SO surprising, considering the heat! I know there were 2 mini roses, red & blue salvia, many daylilies, 6 succulents, dianthus, lantana, rosemary & lavender. The rosemary & lavender made the box smell SOOOO good! If I've forgotten to mention anything, please forgive me! Thank you SO MUCH, Miss Sue! You outdid yourself with a WONDERFUL box, and I absolutely LOVE everything!