Russia/Siberia, Japan
Northeastern United States, Mid-Atlantic United States, Southeastern United States, North-Central United States, Central United States, South-Central United States, Canada
Alpine Meadows, Rocky areas
Dappled Shade, Shady Edge, Woodland Garden
3a, 3b, 4, 5, 6, 7, 8, 9, 14, 15, 16, 17
1a, 1b, 2a, 2b, 3a, 3b, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 18, 19, 20, 21