rydberg's penstemon
Penstemon rydbergii
USDA zones4 to 10
SunHandles full sun to partial sun
WaterHandles dry or moist soil
Size2 to 4 feet tall2 to 3 feet wide
- Habit
- Herb , subshrub
- Bloom season
- Spring, summer
- Bloom color
- Blue
- Foliage color
- Green
Garden uses
Attracts
Notes
Rydberg's penstemon (Penstemon rydbergii) is a perennial for woodland gardens. It is hardy to USDA zone 4, or down to -30°F (-34°C). This plant likes full or part sun and dry to moist soil. Whorls of blue to purple flowers open on stems 2 to 3 feet tall from late spring to late summer. It sits low on the menu for deer. Hummingbirds and bees visit the blooms.
Pairs well with Buffalo grass, Gladiator ornamental onion, and Texas bluebonnet.
Native range
AZ, CA, CO, ID, and 7 more places. See all 11
AZ, CA, CO, ID, MT, NM, NV, OR, UT, WA, and WY.