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Oenothera triloba Nutt.
Stemless evening-primrose, Stemless Evening Primrose
USDA Symbol: oetr2
USDA Native Status: Native to U.S.
Plant CharacteristicsDuration: Annual Habit: Herb Flower:
Fruit: Size Class:
Bloom InformationBloom Color: Orange
Bloom Time: Feb , Mar , Apr , May
AL , AR , IL , IN , KS , KY , LA , MO , MS , NM , NY , OH , OK , PA , TN , TX , VA Native Habitat:
Found in clay or calcerous soils of the Blackland Praire, Rolling Plains, and Edwards plateau. Dry open areas with drained soil such as prairies, floodplains, slopes, hillsides, rocky fields, and grassy areas. A common lawn invader USDA Native Status: L48(N)
Growing ConditionsLight Requirement:
Sun Conditions Comments:
This hardy perennial
is good for rock gardens. The plant forms a rosette
with broadly lobed leaves low to the ground. The flowers are bright yellow when they open near sunset. They close about noon the following day after fading to a pale yellow.
BenefitConspicuous Flowers: yes
Deer Resistant: High
PropagationPropagation Material: Root Division
Maintenance: Prevent complete soil dryness, Fertilize in spring with rose food, Maintain mulch layer, Remove spent blossoms
Herbarium Specimen(s)NPSOT 0209
Collected Apr. 14, 1992 in Comal County by Mary Beth WhiteNPSOT 0692
Collected Feb 23, 1994 in Bexar County by Mike Fox
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Record Modified: 2010-04-18
Research By: NPC