Plantaginaceae
Penstemon angustifolius var. dulcis
Penstemon angustifolius var. dulcis var. dulcis
Flowering Plants · Native Plants · Penstemon · Utah Endemic · Rare Native · Xeriscape · Tubular Flowers · Pollinator Plant · Drought Adapted · Perennial · Native Wildflower · Rocky Soil
Sweet narrow-leaf penstemon is a rare Utah endemic best suited to open, sunny spots with sharply drained, sandy or rocky soil. It needs very little supplemental water once established and benefits from excellent drainage to prevent crown rot. This uncommon variety is a wonderful choice for native plant and xeriscape gardens in the Intermountain West.
Growing conditions
The details behind the basics
- Daily light
- 6 hours
- Watering
- Water deeply but infrequently; allow soil to dry between waterings · Every 10-14 days
- Maintenance
- Low
- Soil
- sandy loam
- Soil pH
- 7–8.5
- Temperature
- -25°F to 95°F
- Cycle
- Perennial
Hardiness
USDA 4b-9b
Form & growth
Mature size and habit
- Mature height
- 12 in – 2 ft
- Spread
- 12 in
- Spacing
- 18 in apart
- Growth rate
- Fast
- Root depth
- Medium
- Flowers
- White
- Foliage
- Green · Medium
Ecology & origin
Where it belongs and what it brings
- Native to
- Utah
- Attracts
- Bees, Butterflies, Hummingbirds
Sources: trefle, usda
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