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Marcus, Joseph A.
Oenothera jamesii Torr. & Gray
River Primrose, Trumpet Evening Primrose, Trumpet evening-primrose
USDA Symbol: oeja
USDA Native Status: Native to U.S.
Plant Characteristics
Duration: Biennial Habit: Herb Leaf Retention: Deciduous Flower:
Fruit: Size Class: 3-6 ft.
Bloom Information
Bloom Color: Yellow
Bloom Time: Jul , Aug , Sep , Oct
Distribution
USA: KS , OK , TX
Native Habitat: Scattered on stream banks in wet places from Edwards Plateau and Llano area west to the Trans-Pecos; OK and west TX south to Coahuila.
USDA Native Status: L48(N) Growing Conditions
Light Requirement: Sun
Soil Moisture: Wet
Heat Tolerant: yes
Conditions Comments: Showy butter yellow flowers open late afternoon or early evening, making it a great addition to a night-time garden. Plants are vase shaped overall and tall, so a location in the back of a bed is appropriate. Propagate by seed in well drained soil. Provide regular or high summer water.
Benefit
Conspicuous Flowers: yes
Interesting Foliage: yes
Attracts: Butterflies
Nectar Source: yes
Deer Resistant: Moderate
Propagation
Propagation Material: Root Division
Maintenance: Prevent complete soil dryness, Maintain mulch layer, Remove spent blossoms, Fertilize in spring with rose food
From the National Organizations Directory
According to the species list provided by Affiliate Organizations, this plant is either on display or available from the following:
Lady Bird Johnson Wildflower Center - Austin, TX
Herbarium Specimen(s)
NPSOT 0634 Collected Sep 25, 1993 in Bexar County by Mike Fox
Recommended Species Lists
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Metadata
Record Modified: 2007-01-01
Research By: DEW, JSC, ADA, WFS
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