Oenothera tetragona
glaucous evening primrose
O. fruticosa subsp. glauca is an herbaceous perennial to 80cm, with erect stems bearing smooth, ovate, glaucous leaves, reddish when young, and terminal racemes of light yellow flowers 3-5cm wide from late spring to late summer
Synonyms
Oenothera tetragona 'Sundrops'Oenothera fruticosa subsp. glauca 'Sundrops'
see moreOenothera tetragona var. fraseri
Oenothera cinaeus
Oenothera tetragona
Oenothera fraseri
Buy this plant
Size
Ultimate height
0.5–1 metresTime to ultimate height
2–5 yearsUltimate spread
0.1–0.5 metresGrowing conditions
Moisture
Well–drainedpH
Alkaline, NeutralColour & scent
| Stem | Flower | Foliage | Fruit | |
| Spring | Yellow | Green | ||
|---|---|---|---|---|
| Summer | Yellow | Green | ||
| Autumn | ||||
| Winter |
Position
- Full sun
Aspect
South–facing or West–facing
Exposure
Exposed or ShelteredDrought resistance
Yes Hardiness
H5Botanical details
- Family
- Onagraceae
- Native to the UK
- No
- Foliage
- Deciduous
- Habit
- Bushy
- Genus
Oenothera can be annuals, biennials or perennials, upright or spreading in habit, with simple or lobed leaves and bowl-shaped, white, yellow or pink flowers over a long period in summer
- Name status
Correct
- Plant range
- E N America
How to grow
Cultivation
Grow in moderately fertile well-drained soil in full sun
Propagation
Propagate by division in early spring or after flowering in late summer
Suggested planting locations and garden types
- Coastal
- Cottage and informal garden
- Mediterranean climate plants
- Low Maintenance
- Flower borders and beds
- Wall side borders
Pruning
Cut back after flowering
Pests
Diseases
Leaf spot and powdery mildew may be a problem
Get involved
The Royal Horticultural Society is the UK’s leading gardening charity. We aim to enrich everyone’s life through plants, and make the UK a greener and more beautiful place.