Canadian/Cimarron Breaks, Semiarid Canadian Breaks
Northern Blackland Prairie
Plant Characteristics
Growth Form
Herbaceous
Height
0.5
to
1
ft.
Spread
1
to
1.5
ft.
Leaf Retention
Deciduous
Lifespan
Perennial
Habitat and Care Requirements
Soil Type(s)
Sand, Loam, Gravelly, Rocky, Calcareous
Light Requirement
Sun, Part Shade
Water Requirement
Low
Native Habitat
Grassland
Bloom and Attraction
Bloom Color
Yellow
Bloom Season
Summer
Seasonal Interest
Nectar, Pollen
Wildlife Benefit
Hummingbirds, Moths, Bees
Maintenance
A good addition to rock gardens. Prevent complete soil dryness, Propagation: Seed.
Comments
Blooms April-August. Can be upright or trailing. The foliage is narrow, thick and gray-green. Showy, large yellow flowers that open in the evening, closing the next day. A handsome plant with a low mounding habit. May go dormant in hot dry summers. This species is pollinated primarily by hawk moths
References
1) Griffith, Bryce, Omernick & Rodgers (2007). Ecoregions of Texas. 2) https://www.wildflower.org/plants/result.php?id_plant=OEMA. 3) https://portal.torcherbaria.org/portal/taxa/index.php?taxon=Oenothera+macrocarpa&formsubmit=Search+Terms. 4) http://bonap.net/TDC/Image/Map?taxonType=Species&taxonId=15762&locationType=County&mapType=Normal. 5) https://www.itis.gov/servlet/SingleRpt/SingleRpt?search_topic=TSN&search_value=504004#null, 6) Native and Adapted Landscape Plants, City of Austin and Texas A&M, 2014.