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Sundrops

Oenothera berlandieri

Other common name(s):

Squarebud Primrose, Berlandier's Sundrops

Family:

Onagraceae (Evening Primrose Family)

Plant Ecoregion Distribution Map

Central Great Plains, Chihuahuan Deserts, Cross Timbers, East Central Texas Plains, Edwards Plateau, Gulf Coast Prairies and Marshes, High Plains, Southern Texas Plains, Southwestern Tablelands, Texas Blackland Prairies, Western Gulf Coastal Plain
Broken Red Plains, Limestone Plains, Red Prairie
Chihuahuan Basins and Playas, Chihuahuan Desert Grasslands, Chihuahuan Montane Woodlands, Low Mountains and Bajadas, Stockton Plateau
Carbonate Cross Timbers, Eastern Cross Timbers, Grand Prairie, Limestone Cut Plain, Western Cross Timbers
Bastrop Lost Pines, Floodplains and Low Terraces2, Northern Post Oak Savanna, San Antonio Prairie, Southern Post Oak Savanna
Balcones Canyonlands, Edwards Plateau Woodland, Llano Uplift, Semiarid Edwards Plateau
Coastal Sand Plain, Floodplains and Low Terraces4, Laguna Madre Barrier Island and Coastal Marshes, Lower Rio Grande Alluvial Floodplain, Lower Rio Grande Valley, Mid-Coast Barrier Islands and Coastal Marshes, Northern Humid Gulf Coastal Prairies, Southern Subhumid Gulf Coastal Prairies
Arid Llano Estacado, Canadian/Cimarron High Plains, Llano Estacado, Rolling Sand Plains, Shinnery Sands
Northern Nueces Alluvial Plains, Rio Grande Floodplain and Terraces, Semiarid Edwards Bajada, Texas-Tamaulipan Thornscrub
Canadian/Cimarron Breaks, Caprock Canyons Badlands Breaks, Flat Tablelands and Valleys, Semiarid Canadian Breaks
Floodplains and Low Terraces1, Northern Blackland Prairie, Southern Blackland Prairie
Flatwoods, Floodplains and Low Terraces3, Southern Tertiary Uplands

Plant Characteristics

Growth Form

Herbaceous

Height

1
to
2
ft.

Spread

1
to
1
ft.

Leaf Retention

Evergreen

Lifespan

Perennial

Habitat and Care Requirements

Soil Type(s)

Sand, Loam, Clay, Limestone, Caliche, Well Drained

Light Requirement

Sun

Water Requirement

Low

Native Habitat

Grassland, Woodland

Bloom and Attraction

Bloom Color

Yellow

Bloom Season

Spring, Summer

Seasonal Interest

Nectar

Wildlife Benefit

Butterflies, Bees

Maintenance

Good rock garden and groundcover plant. Little maintenance required. Provide good drainage. Prune brown leave and old blooms. Propagation: Seed, Stem cuttings.

Comments

Blooms March-September. Bushy & low growing. C. berlandieri subsp. pinifolius is the more common wild subspecies, but has a single stem. Native Habitat: Plains; woodland edges; roadsides.
Previous Scientific Name(s): Synonym/s: Calylophus berlandieri

References

1) Griffith, Bryce, Omernick & Rodgers (2007). Ecoregions of Texas. 2) https://www.wildflower.org/plants/result.php?id_plant=CABE6. 3) http://bonap.net/TDC/Image/Map?taxonType=Species&taxonId=15810&locationType=County&mapType=Normal, 4) https://www.itis.gov/servlet/SingleRpt/SingleRpt?search_topic=TSN&search_value=836060#null, 5) Native and Adapted Landscape Plants, City of Austin and Texas A&M, 2014.

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