
trefle.io · Taken Sep 3, 2019 by Manu Pacha (cc-by-sa)
Onagraceae
German-rampion
Oenothera biennis
Also known as Oenothera biennis var. rubricaulis, Oenothera sackvillensis var. royfraseri, Oenothera nissensis, Onagra biennis
Flowering Plants · Native Plants · Evening Primrose · Wildflower · Yellow Flowers · Night Blooming · Pollinator · Medicinal · Self-Seeding · Cottage Garden · Biennial · Oenothera
Common evening primrose is a vigorous biennial or short-lived perennial that produces cheerful yellow flowers in summer, which open in the evening and attract moths and bees. Plant in a sunny to partly shaded spot with well-draining soil and water every 7-14 days; it tolerates poor soils and is relatively drought-resistant once established. This easy-care wildflower self-seeds freely, so deadhead if you want to control its spread.
Growing conditions
The details behind the basics
- Daily light
- 6 hours
- Watering
- Water deeply but infrequently; allow soil to dry slightly between waterings · Every 7-14 days
- Maintenance
- Low
- Soil
- loam
- Soil pH
- 5–7
- Temperature
- -25°F to 85°F
- Cycle
- Perennial
- Propagation
- Seed
Hardiness
USDA 4b-9b
Form & growth
Mature size and habit
- Mature height
- 12 in – 3 ft
- Spread
- 2 ft
- Spacing
- 18 in apart
- Growth rate
- Fast
- Root depth
- Medium
- Flowers
- Yes
- Foliage
- Coarse
Ecology & origin
Where it belongs and what it brings
- Native to
- Alabama, Albania, Alberta, Algeria, Altay, Amur, Argentina Northeast, Argentina Northwest, Arkansas, Austria, Baltic States, Bangladesh, Belarus, Belgium, Brazil South, British Columbia, Bulgaria, Buryatiya, California, Canary Is.
- Attracts
- Bees, Butterflies, Moths
Sources: trefle, usda
More Oenothera
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Oenothera pallida subsp. pallida
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Oenothera cespitosa subsp. cespitosa
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Oenothera elata subsp. hirsutissima
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