Rocky Mountain Penstemon
Penstemon strictus
pen-STEE-mon STRIK-tus
Perennials: Flower
Zone
3: -40° to -30°
Min. Temp
Hardy: 28°
Appearance
Summer Foliage
Green
Fall Foliage
Green
Flower Color
Purple
Blooming Time
Early Summer - Fall
Habit
Upright
Height
12–18 in
Spread
2–3 ft
Form
Trumpet
Characteristics
Type
Native Selection
Safety
Non-toxic
Growth Rate
Moderate
Tolerance/Resistance
Heat Tolerant, Drought Tolerant
Attracts
Attracts Hummingbirds; Attracts Honeybees & Pollinators
Uses/Placement
Massed
Optimal Growing Conditions
Sun Exposure
Full Sun - Part Shade
Soil Texture
Sandy
Soil Drainage
Well-drained
Soil Moisture
Dry to Average
Soil PH
Slightly Alkaline: 7.0-7.5
PH Tolerance
Prefers slightly alkaline soil
Soil Amendment(s)
Compost
Fertilizer
Light Feeder
Fertilizer Formula
Balanced Fertilizer
Fertilizer Timing
Pre-Bloom
Micronutrients
Trace Minerals Beneficial
Care
Care Level
Low
Behavior and Propagation
Spreading
Moderate Spreader
Propagation Method
Benefits from Pollinators
Propagation Licensing
Open propagation permitted
Division Timing
Spring or Fall Division