Hybrid origin
North America, United States, Western United States, Southwestern United States, Mexico
gardens, Grassland, Mountain tops, Rocky areas
Dry areas
H1, H2, 6, 7, 8, 9, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24
1a, 1b, 2a, 2b, 3a, 3b, 7, 8, 9, 10, 11, 14, 18, 19, 20, 21