I ordered a lot of bulbs to plant last fall and when I finished with the Tulips and Hyacinths, I kept on going with three colors of Crocus. I accidentally kept the mindset about planting the former at 4" to 6" deep and planted these too deep.
This spring, other crocus I planted elsewhere sprouted and bloomed right on schedule. For this new planting, the yellow started blooming at the time the others were ending. A couple weeks later, the white did as well. I could see the purples I planted did sprout but didn't look like they would bloom. Last week one bloomed, then a few more, then all of them, the yellow are just now starting to fade, and the white are doing great. I had realized my mistake, and because they had to climb higher to get to bloom, the purple came last and there are lots of all three colors, something I have never seen before. So, these are remarkable flowers, not just how they come up so early.