OENOTHERA biennis (Evening Primrose) is a biennial flowering plant native to North America. This is a biennial plant, which means it completes its lifecycle in two years. It belongs to the Onagraceae family.
Evening Primrose plants have a basal rosette of lance-shaped leaves in the first year. In the second year, tall flowering stems emerge, reaching heights of 3 to 6 feet (90 to 180 cm). The flowers are the main attraction, featuring four-petaled blooms that are typically yellow but can also be pink or white. The flowers open in the evening and have a sweet fragrance. The blooms attract pollinators such as bees and butterflies.
Evening Primrose typically blooms in late spring to summer, generally from June to August. The blooming period may vary depending on the local climate and growing conditions.
Evening Primrose thrives in full sun to partial shade. It prefers well-draining soil and can tolerate various soil types, including sandy or rocky soils. It is relatively adaptable and can grow in both cool and warm regions. Evening Primrose is known for its ability to tolerate dry conditions.
Evening Primrose, with its tall flowering stems and colorful blooms that open in the evening, adds beauty and fragrance to garden landscapes. Its adaptability to various growing conditions and ability to attract pollinators make it a popular choice for gardeners looking to create a vibrant and wildlife-friendly garden.
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Scientific Name: Oenothera Biennis
Common Name: Evening Primrose
Plant Type: Biennial
Native Range: Eastern North America
Height: 36-60 "
Spread: 24-36 "
Zone: 4 to 9
Exposure: Full Sun to Partial Shade
Blooming Season: June to September
Attracts: Birds, Butterflies
Flower Color: Yellow
Water Requirement: Medium
Soil Type: Chalk, Loam, Sand
Soil pH: Alkaline, Neutral, Well-drained
Uses: Beds and Borders, Wildflower Gardens, Cottage Gardens, Herb Gardens