Life Span
Type
Origin
Types
Number of Varieties
Habitat
USDA Hardiness Zone
AHS Heat Zone
Sunset Zone
Habit
Southern Europe, Mediterranean, Northern Africa
5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 18, 19, 20, 21, 22, 23, 24
North-Central United States, Central United States, Western United States, Texas
Blue Toadflax, Old-Field Toadflax
1a, 1b, 2a, 2b, 3a, 3b, 10