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Oenothera biennis

Growing Information

Plant Type: Perennial
Sunlight: Sun to shade
Soils: Dry, sandy
Bloom Time: Yellow in July, August, September
Size: Size: 2-6 feet in height; 3 foot spread

The lemon-scented large yellow flowers open in the evening and close by noon. Grows vegetatively its first year then flowers its second year but does not persist. Seeds germinate if soil is disturbed. Can become weedy but it is an important native plant with a long and late bloom time supporting many insects. Drought tolerant and good for naturalizing.

Garden Companions

Black-eyed Susan (Rudbeckia hirta), Little Bluestem (Schizachyrium scoparium), Butterfly Milkweed (Asclepias tuberosa)

Nature Benefits

• Host plant for the pink Primrose Moth (Schinia florida).
• Attracts wide variety of other moths, birds, hummingbirds and specialized bees.
• Birds eat seeds – especially goldfinches.
• Small mammals eat roots and leaves.

Native Habitat

Occurs in meadows, fields, floodplains, river or lake shores.

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Photos