Oenothera caespitosa
Evening Primrose
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Evening Primrose (Oenothera caespitosa) - Description
O. caespitosa is native to the western United States. It bears many narrow, fuzzy gray-green leaves to 4 inches in length. It also produces fragrant, 3 to 4 inch flowers, which fade from white to pink and open in the evening. It blooms heavily in the late spring and early summer.
Evening Primrose (Oenothera caespitosa) - Blooming
Blooms during the summer with large cup-shaped flowers that are usually white, yellow, or pink. The flowers open at dawn or dusk.
Evening Primrose (Oenothera caespitosa) - Growth
Evening Primroses do well in full sun. Plant height varies depending on variety. One species can grow to approx. 6 ft. tall. Works great in a rock garden.
Evening Primrose (Oenothera caespitosa) - Planting
Propagate from the seed. Annuals and perennials should be planted in spring, biennials in summer (if planting in containers in a cold frame). Can also plant annuals and biennials "in situ" in fall. Propagate from softwood cuttings of perennials in spring before flowering occurs. Plant cuttings at a distance from seeded plants to avoid interference between taproot species. Can achieve this by first planting in containers.
Evening Primrose (Oenothera caespitosa) - Pest
Under wet conditions, Oenothera is susceptible to root rot. Other issues include downy mildew, powdery mildew, rust, leaf gall, and leaf spot, all of which are quite common.
Evening Primrose (Oenothera caespitosa) - Interesting facts
Oenothera is mostly native to North America, although some species are found in South America.
Evening Primrose (Oenothera caespitosa) - Soil and irrigation
Plant requires little irrigation. Does best in poor-moderately fertile, gritty soil. Soil must be well-draining.
