Flower Properties
| Property | Value |
|---|---|
| English Name | Large Evening Primrose |
| Also Known As | Large-flowered Evening-primrose |
| Scientific Name | Oenothera glaziovana |
| MainColor | Yellow |
| PlantType |  Herb |
| Distribution |  Cultivated |
| Season Found | July (Jun - Sep) |
| ImageUrl | Oenothera-002 |
| Photographer | DP |
| Location Found | St Albans |
| Country Found | UK |
| Last Updated | 02 September 2026 |
| Photo Quality | A |
Flower Details
Description
A tall biennial with bright yellow, fragrant flowers that open in the evening, each lasting just one night. The stems are reddish and covered in fine hairs.
Distribution
Native to South America (Brazil); naturalised across the UK, often on disturbed ground, railways, and sandy soils.
Medicinal/Other Uses
Seeds yield evening primrose oil, rich in gamma-linolenic acid (GLA), used to support hormonal balance, skin health, and inflammation control.
Edibility
Young roots and shoots can be eaten cooked, though not common. Seeds occasionally used for oil extraction.
Human Toxicity
Non_ToxicLarge quantities may cause digestive upset; avoid oil supplements during epilepsy treatment or blood-thinning medication.
Pet Toxicity
Not Toxic
Active Compounds
Gamma-linolenic acid, linoleic acid, tannins, flavonoids.