
Hartweg's beardtongue
Penstemon hartwegii
Hartweg's beardtongue thrives in partial shade with regular watering during the growing season, though it dislikes waterlogged soil. Plant in well-draining, moderately fertile soil and deadhead spent blooms to encourage continued flowering. It is a rewarding perennial for cottage gardens and pollinator beds in mild climates.
Care Level
Moderate
Sun
Partial Shade
Water
Moderate
Growth Rate
Fast
Mature Height
12″ – 48″
Soil
loam
Life Cycle
Perennial
Spacing
18″
Flowers
red
Watering Schedule
Every 7-10 Days • Water Deeply Until Soil Is Evenly Moist, Then Allow The Top Inch To Dry Before Watering Again
Soil pH
6.8 – 8
Temperature
-40° – 95°F
Mature Spread
up to 36″
Root Depth
Medium
Foliage
Medium
Native to
Attracts
Sources
Data: trefle, usda
Image: trefle.io — Taken Jun 21, 2022 by anthony abbott (cc-by-sa)
No nurseries currently have this species in stock.