1 What is
1.1 Life Span
1.2 Type
1.3 Origin
North-Central United States, Central United States, Western United States, Texas
Europe, Eastern Europe, Southern Europe, Russia/Siberia, Iran, Central Asia, Southern Asia, Western Asia, India, Nepal, China
1.4 Types
Blue Toadflax, Old-Field Toadflax
Black walnut
1.4.1 Number of Varieties
1.5 Habitat
Cultivated Beds
Cold Regions, Hills, Hillside
1.6 USDA Hardiness Zone
1.7 AHS Heat Zone
1.8 Sunset Zone
1a, 1b, 2a, 2b, 3a, 3b, 10
1a, 1b, 2a, 2b, 3a, 3b, 4, 5, 6, 7, 8, 9, 14, 15, 16, 17, 18, 19, 20, 21
1.9 Habit
Upright/Erect
Oval or Rounded