Oenothera Species, River Primrose, Trumpet Evening-Primrose
Oenotherajamesii

Family: Onagraceae (on-uh-GRAY-see-ee)
Genus: Oenothera (ee-no-THEE-ruh)
Species: jamesii (JAMES-ee-eye)

Synonym:Oenothera suzukiana

Synonym:Onagra jamesii

Category
Biennials

Water Requirements
Requires consistently moist soil; do not let dry out between waterings

Sun Exposure
Full Sun
Sun to Partial Shade

Foliage

Foliage Color

Height
36-48 in. (90-120 cm)
4-6 ft. (1.2-1.8 m)

Spacing

Hardiness

Where to Grow

Danger

Bloom Color
Bright Yellow

Bloom Characteristics
This plant is attractive to bees, butterflies and/or birds

Bloom Size

Bloom Time
Mid Summer
Late Summer/Early Fall
Mid Fall

Other details

Soil pH requirements

Patent Information

Propagation Methods
By dividing the rootball
From seed; direct sow outdoors in fall
From seed; sow indoors before last frost

Seed Collecting
Allow pods to dry on plant; break open to collect seeds
Properly cleaned, seed can be successfully stored