Oenothera missouriensis
Oenothera Macrocarpa
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Oenothera Macrocarpa (Oenothera missouriensis) - Description
HEIRLOOM. Also called sundrops, this easy native perennial has long been popular in American gardens. It thrives despite heat and drought, the showy yellow flowers open in mid-afternoon through the evening and stays open all the next day. 12" plants; flowers are 4" across on short, trailing stems. Reselection of a longtime Burpee classic. Excellent flowering ground covers for the fronts of your borders. Requires good drainage.
Oenothera Macrocarpa (Oenothera missouriensis) - Blooming
Blooms during the summer with large cup-shaped flowers that are usually white, yellow, or pink. The flowers open at dawn or dusk.
Oenothera Macrocarpa (Oenothera missouriensis) - 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.
Oenothera Macrocarpa (Oenothera missouriensis) - 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.
Oenothera Macrocarpa (Oenothera missouriensis) - 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.
Oenothera Macrocarpa (Oenothera missouriensis) - Interesting facts
Oenothera is mostly native to North America, although some species are found in South America.
Oenothera Macrocarpa (Oenothera missouriensis) - Soil and irrigation
Plant requires little irrigation. Does best in poor-moderately fertile, gritty soil. Soil must be well-draining.
