Europe, Northern Europe, Western Europe, Asia, Central Asia, Western Asia
China, Japan, Korea
Clay soil areas, Loamy soils, Sandy areas, sandy seeps, Well Drained
Dappled Shade, Shady Edge, Woodland Garden
A2, A3, 1a, 1b, 2a, 2b, 3a, 3b, 4, 5, 6, 7, 8, 9, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24
4, 5, 6, 7, 8, 9, 12, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24