Oh dear, I did not know they were difficult. I found a bag of them on sale late in the season and purchased it. Then I didn't get around to planting them quickly but finally got them in the ground. Of the 25 in the bag, 4-5 actually came up and bloomed. By this time I had forgotten and was really thrilled at their beauty. What a surprise, I didn't expect to see anything this year and was hoping for next season. Waiting to see if any come again, will let you know. Carolyn in Los Gatos, CA