Onagraceae
Oenothera psammophila
Oenothera psammophila
Also known as Pachylophus psammophilus, Oenothera cespitosa var. psammophila
Flowering Plants · Native Plants · Evening Primrose · Wildflower · Sandy Soil · Idaho Native · Oenothera · Pollinator Plant · Yellow Flowers · Native Perennial · Rock Garden · Moths
Sand-loving evening primrose is a specialist wildflower native to sandy soils of Idaho, best suited to rock gardens or native plant landscapes with excellent drainage. It produces cheerful yellow blooms that attract pollinators, especially at dusk when moths and bees are active. Minimal maintenance is needed once established in the right sandy, well-drained conditions.
Growing conditions
The details behind the basics
- Daily light
- 4 hours
- Watering
- Water moderately, allowing the top 1-2 inches of soil to dry between waterings · Every 7-10 days
- Maintenance
- Low
- Soil
- loam
- Soil pH
- 6.5–8
- 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
- Fast
- Root depth
- Medium
- Flowers
- Yes
- Foliage
- Medium
Ecology & origin
Where it belongs and what it brings
- Native to
- Idaho
- Attracts
- Bees, Butterflies, Moths
Sources: trefle, usda
More Oenothera
Related plants from the same genus
German-rampion
Oenothera biennis
Full Sun · Moderate · Fast
Oenothera pallida subsp. pallida
Oenothera pallida subsp. pallida
Full Sun · Moderate · Moderate
Oenothera cespitosa subsp. macroglottis
Oenothera cespitosa subsp. macroglottis
Full Sun · Moderate · Fast
Oenothera cespitosa subsp. cespitosa
Oenothera cespitosa subsp. cespitosa
Full Sun · Moderate · Fast
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