It has been several weeks since the Kirengeshoma koreana has finished blooming. Taking its turn in the garden to bloom is Kirengeshoma palmata. Often people will say this is the superior of the two varieties. However, if you live in an area with beefy bees, you'll notice how their knees, posteriors and general size is just too big for these pretty blossoms - leaving the petal edges in tatters when they come and go in search for pollen.
So, for those with super-sized bees, my advice would be to grow K. koreana instead - link noted below.