Whipple's penstemon
Penstemon whippleanus
Whipple's penstemon is a stunning native Rocky Mountain wildflower producing tubular dark purple to white blooms that are irresistible to hummingbirds and native bees. It thrives in well-drained, lean soils with moderate moisture and full to partial sun, performing poorly in rich or waterlogged conditions. Plant it in xeric or native gardens and avoid overwatering or heavy fertilization, which can shorten its lifespan.
Care Level
Moderate
Sun
Partial Shade
Water
Moderate
Growth Rate
Fast
Mature Height
240″ – 480″
Soil
loam
Life Cycle
Perennial
Spacing
18″
Flowers
purple
Watering Schedule
Every 10-14 Days • Water Deeply But Infrequently, Allowing The Soil To Dry Moderately Between Waterings To Mimic Natural Rocky Mountain Conditions
Soil pH
7 – 8
Temperature
-25° – 95°F
Mature Spread
up to 240″
Root Depth
Medium
Foliage
Medium
Propagation: Seed
Native to
Attracts
Sources
Data: trefle, usda
Image: trefle.io — Taken Sep 18, 2015 by EOL − Barry Breckling (cc-by-nc-sa)
No nurseries currently have this species in stock.