The Blackberry Lily is native to China and Japan and is not actually a lily- it is in the Iris family. Belamcanda chinensis is commonly called "Blackberry Lily" because of the cluster of shiny black seeds that are produced after the seed pod splits open.
Blackberry Lilies are hardy in zones 5-10 and produces fan-shaped leaves similar to Iris plants. These colorful flowers are 2-3 inches wide and spotted. The flowers may be small but I think they're very eye-catching and make a great addition to the garden. These plants came from a seed trade I conducted on GardenWeb and seeing them bloom in my garden I wish "Big Box" garden centers carried these and were readily available for Chicago gardeners. The only place I've seen Blackberry Lilies around here was at an upscale garden center in the suburbs that was an extension of a landscaping company.
Some websites recommend growing these in partial shade and in full sun. My experience with them in my garden tells me that partial shade may not be a great idea. The seeds I directly sowed in the garden the winter before last have only grown to about 4 inches while the seeds that I sowed in full sun are now large blooming plants. I sowed some of these seeds among my daylilies and now that the daylilies are winding down the Blackberry Lilies are providing some color. I think I'll transplant the plants that didn't grow much into the area where I have my black Iris growing so that it can do the same there after the Iris stops flowering next year.
One thing that I've found particularly interesting about these flowers is the way the flower petals will wind around themselves after they're spent like in the image above of the seed pods that are forming. I didn't try to pollinate these blooms and I don't know if any insects did the work for me because I didn't observe many, if any, pollinators visiting the blooms.