At the time we imported it into the garden its identity was a mystery, but we believe it's the Scutellaria aff. It is recommended for shade, but thrives in partial sun in a raised bed. In fact, it thrives almost too well, spreading vigorously but easily pulled up by its shallow roots when it gets too rambunctious. A white-flowered form is also available. Protect from hot afternoon sun.
Flowers are a near cobalt blue.
The foliage turns shades of red in fall. Oxypetalum caeruleum has a lax habit but produces flowers in a shade found hardly anywhere else in nature. Our experience with several including 'Six Hills Giant' has been that they sprawl and bloom fitfully. Maybe this year we'll remember to sample the fragrant foliage. It can be grown as a shrub or small tree.