Onagraceae
Oenothera pallida subsp. trichocalyx
Oenothera pallida subsp. trichocalyx
Also known as Anogra trichocalyx, Anogra rhizomata, Anogra vreelandii, Oenothera trichocalyx f. albicauloidea
Flowering Plants · Native Plants · Evening Primrose · Native Wildflower · White Flowers · Night Blooming · Pollinator · Drought Adapted · Western Usa · Onagraceae · Sandy Soil · Fragrant
This white-haired pale evening primrose is a delicate native wildflower suited to dry, sandy, or rocky soils in Western gardens. Plant in a sunny to lightly shaded spot and water sparingly once established, as overwatering is the most common cause of failure. Its fragrant white blooms open in the evening, attracting moths and night pollinators.
Growing conditions
The details behind the basics
- Daily light
- 5 hours
- Watering
- Water moderately until soil is moist to a few inches depth; allow to dry between waterings · Every 7-14 days
- Maintenance
- Low
- Soil
- sandy loam
- Soil pH
- 6–8
- Temperature
- -25°F to 100°F
- Cycle
- Perennial
Hardiness
USDA 4b-10b
Form & growth
Mature size and habit
- Mature height
- 6 in – 18 in
- Spread
- 18 in
- Spacing
- 18 in apart
- Growth rate
- Moderate
- Root depth
- Medium
- Flowers
- Yes
- Foliage
- Fine
Ecology & origin
Where it belongs and what it brings
- Native to
- Arizona, Colorado, New Mexico, Utah, Wyoming
- Attracts
- Bees, Butterflies, Moths
Sources: trefle, usda
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