Overview
Oenothera tetragona 'Lady Brookborough' is a perennial in the genus Oenothera, part of the Onagraceae family. Oenothera tetragona 'Lady Brookborough' grows best in full sun and partial shade, and tolerates well-drained soils and neutral and alkaline pH. Its UK hardiness is rated H5. Suggested uses include borders and pollinator garden. It is native to eastern North America.
About
Oenothera tetragona 'Lady Brookborough' is a perennial in the Onagraceae with a mild floral fragrance and a sustained summer flowering period. It blooms from June to September and suits full sun or partial shade. The plant prefers well-drained soil that is neutral to alkaline and of medium moisture. Its H5 rating means it is hardy in much of the UK.
Wikipedia contributors, CC BY-SA 4.0 — Oenothera tetragona
About the genus
Oenothera is a genus of about 160 species of herbaceous flowering plants native to the Americas. The genus includes common evening primrose, sundrops and gaura. It is the type genus of the family Onagraceae.
Wikipedia contributors, "Oenothera", CC BY-SA 4.0 — Oenothera
In the garden
Oenothera tetragona 'Lady Brookborough' belongs to the evening-primrose genus Oenothera and originates from eastern North America. As a perennial, it produces flowers through the summer months; expect blooms from June to September and a mild scent while it is in flower. Place the plant where it receives full sun or some afternoon shade; it tolerates both full sun and partial shade. Ground should be well drained and lean towards neutral or alkaline pH, with a medium level of soil moisture rather than waterlogged conditions. Its H5 hardiness means it is classed as hardy and will survive typical UK winters in most regions. Use Oenothera tetragona 'Lady Brookborough' in mixed borders or dedicated pollinator areas where a long flowering season is desirable. The combination of summer-long blooms and a mild fragrance makes it suitable alongside other summer-flowering perennials in border fronts or middle beds. Flowers run from June to September and provide a steady period of interest through the summer months.
Growing conditions
Best soil and position for Oenothera
- Sunlight
- full sun, partial shade
- Soil type
- well-drained
- Soil pH
- neutral, alkaline
- Soil moisture
- medium
- UK hardiness
- H5
Plant details
Oenothera tetragona 'Lady Brookborough' size, habit and characteristics
- Plant type
- perennial
- Suggested uses
- borders, pollinator garden
- Native to
- eastern North America
- Fragrance
- mild
Care notes
Pruning and caring for Oenothera tetragona 'Lady Brookborough'
- Propagation
- seed, division
Frequently asked questions
Where is the best place to plant Oenothera tetragona 'Lady Brookborough'?
Oenothera tetragona 'Lady Brookborough' prefers full sun and partial shade.
What soil does Oenothera tetragona 'Lady Brookborough' need?
Oenothera tetragona 'Lady Brookborough' grows best in well-drained soil. It prefers neutral and alkaline soil. Aim for soil that stays medium.
Is Oenothera tetragona 'Lady Brookborough' hardy in the UK?
Oenothera tetragona 'Lady Brookborough' has an RHS hardiness rating of H5, meaning it is hardy in most of the UK, tolerating -15 to -10°C.
How do I propagate Oenothera tetragona 'Lady Brookborough'?
Seed, division.
More in the Oenothera genus
- Oenothera fruticosa 'Michelle Ploeger'Narrowleaf Evening Primrose

- Gaura lindheirmeri 'Cool Breeze'
- Oenothera lindheimeri Baby Butterfly Dark Pink ('Uriblbp'PBR) (G)