Penstemon rydbergii (Rydberg’s penstemon)
Widespread native perennial with woody rhizomes and bright blue or purple flowers, blooming June to August. Moderately drought tolerant, occurring on dry to moist meadows, shrublands, open woodlands and streambanks; 2,000 to 13,000 ft. elevation. Foliage is more palatable to browsing herbivores than most other penstemon species. Attracts hummingbirds, butterflies and pollinating insects.
DISTRIBUTION / ADAPTATION
INFORMATION & ATTRIBUTES
Family: Scrophulariaceae
Duration: Perennial
Growth Habit: Forb/herb/subshrub
Native Status: Native
Growth Form: Bunch
Mature Height: 36 in.
Bloom Color: Blue
Bloom Period: Mid summer
Annual Precipitation: 20-30 in.
Drought Tolerance: Low
Shade Tolerance: Intolerant
Elevation:
Wetland Indicator Status: FACU
Fire Resistance: No
Fire Tolerance: Medium
Nitrogen Fixation: None
SOIL ADAPTATION
Coarse Texture: No
Medium Texture: Yes
Fine Texture: Yes
Salinity Tolerance: None
CaCO3 Tolerance: Yes
pH Range: 6.0-8.0
SEEDING NOTES
Seeds per Pound: 131,900
Seeding Rate: .85 PLS lbs/acre
Season: Fall
Days to Germination:
VARIETIES & LOCAL ACCESSIONS
None