Plantaginaceae
Penstemon lemhiensis
Penstemon lemhiensis
Also known as Penstemon speciosus subsp. lemhiensis
Flowering Plants · Native Plants · Penstemon · Idaho Native · Montana Native · Hummingbird Plant · Rocky Mountain · Wildflower · Perennial · Pollinator · Native Plant · Tubular Flowers
Lemhi penstemon is a hardy Rocky Mountain native that performs best in full sun to part shade with well-drained, gritty or rocky soils typical of its Idaho and Montana homeland. Water consistently during the growing season but ensure excellent drainage to prevent crown rot, especially over winter. Its tubular flowers are magnets for hummingbirds and native bees, making it a rewarding choice for wildlife-friendly gardens.
Growing conditions
The details behind the basics
- Daily light
- 6 hours
- Watering
- Water moderately, keeping soil evenly moist but never waterlogged; reduce watering in winter · Every 7-10 days
- Maintenance
- Moderate
- Soil
- loam
- Soil pH
- 6.4–8
- Temperature
- -40°F to 95°F
- Cycle
- Perennial
Hardiness
USDA 3a-9b
Form & growth
Mature size and habit
- Mature height
- 12 in – 4 ft
- Spread
- 3 ft
- Spacing
- 18 in apart
- Growth rate
- Moderate
- Root depth
- Medium
- Flowers
- Yes
- Foliage
- Coarse
Ecology & origin
Where it belongs and what it brings
- Native to
- Idaho, Montana
- Attracts
- Bees, Butterflies, Hummingbirds
Sources: trefle, usda
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