WSU Clark County Extension
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Lemon Sunset Evening Primrose

Scientific name: Oenothera longifolia 'Lemon Sunset'
Taxonomy
Family:Onagraceae
Type:Herbaceous perennials
Native:NO
Plant Requirements
Zone:5 to 9
Sun:Full sun
Moisture:Dry
Plant Characteristics
Height:4 ft
Width:3 ft
Bloom:Summer flowers
Bloom Time:June to August
Bloom Color:Yellow
Additional Characteristics
Trees


Fruit

Leaves


Bark
Wildlife value

Poisonous
Description Lemon Sunset is a cultivar of Evening Primrose whose fragrant flowers open in the evening and then stay open until the following afternoon.

  Morphology:
This herbaceous perennial grows to 4’ tall and spreads to 3'. Leaves are green and narrow in width.

This particular cultivar features soft yellow flowers (4 petals) which are cup shaped. As the flowers mature they acquire a reddish tint (hence the name). Flowering occurs from June through August.

  Adaptation:
Easily grown in average, dry to medium, well-drained soils in full sun. May be grown from seed and may self-seed in optimum growing conditions. If left unattended, the roots spread in a network that requires heavy cutting/tugging to remove.

  Pests:
None reported.
For assistance, contact Dr. Charles Brun (brunc@wsu.edu), (360) 397-6060 5701
Computing and Web Resources, PO Box 6234, Washington State University, Pullman WA 99164-6234