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Vachellia rigidula
Vachellia rigidula (Benth.) Seigler & Ebinger
Blackbrush Acacia, Blackbrush, Chaparro Prieto, Gavia
Fabaceae (Pea Family)
Synonym(s): Acacia amentacea, Acacia rigidula
USDA Symbol: VARI
USDA Native Status: L48 (N)
Spiny, stiff-branched, thicket-forming shrub bearing numerous spikes of yellow flowers. Chaparro-prieto or blackbrush grows 5-15 ft., or more. Prolific spikes of pale yellow, fragrant flowers are borne on the numerous stiff, thorny branches. The bark of this shrub is whitish in color. Its semi-evergreen leaves are dark-green, glossy and pinnately compound.
Plant Characteristics
Duration: PerennialHabit: Tree
Leaf Retention: Deciduous
Leaf Arrangement: Alternate
Fruit Type: Legume
Size Notes: Up to about 20 feet tall, often shorter.
Flower: Flowers in 2 inch spikes
Fruit: Brown
Bloom Information
Bloom Color: White , YellowBloom Time: Mar , Apr , May , Jun
Distribution
USA: TXNative Distribution: Rio Grande Plain to Austin and Big Bend; adjacent Mex.
Native Habitat: Prairie, Plains, Meadows, Pastures, Savannas, Chaparral & brush country, Roadsides
Growing Conditions
Water Use: LowLight Requirement: Part Shade
Soil Moisture: Dry
Cold Tolerant: yes
Soil Description: Sandy, Sandy Loam, Medium Loam, Clay Loam, Clay, Caliche type, Dry sand or limestone.
Conditions Comments: Slow-growing but vigorous, blackbrush acacia suckers readily. These suckers can be removed at ground level. Pruning encourages dense branching and more flowers. This plant has been used both as an ornamental and for erosion control.
Benefit
Use Ornamental: Aromatic, Showy, Long-living, Erosion control, Blooms ornamental. This plant is used in rock gardens, landscapes, or xeriscapes.Use Wildlife: Flowers are a source of honey. Nectar-bees, Nectar-butterflies, Nectar-moths, Nectar-insects, Seeds-granivorous birds, Browsed by deer.
Conspicuous Flowers: yes
Deer Resistant: Moderate
Propagation
Propagation Material: SeedsDescription: Propagation is possible with untreated or treated seed.
Seed Collection: Late summer to early fall when seeds are firm, filled out, and dark brown
Seed Treatment: Soaking seeds in concentrated sulfuric acid for 30 minutes has shown to enhance germination.
From the National Organizations Directory
According to the species list provided by Affiliate Organizations, this plant is on display at the following locations:Nueces River Authority - Uvalde, TX
Texas Parks and Wildlife Department - Austin, TX
NPSOT - Austin Chapter - Austin, TX
National Butterfly Center - Mission, TX
Wildflower Center Seed Bank
LBJWC-MLE-14 Collected 2010-06-07 in Val Verde County by Lady Bird Johnson Wildflower CenterBibliography
Bibref 355 - Landscaping with Native Plants of Texas and the Southwest (1991) Miller, G. O.Bibref 318 - Native Texas Plants: Landscaping Region by Region (2002) Wasowski, S. & A. Wasowski
Bibref 248 - Texas Wildflowers: A Field Guide (1984) Loughmiller, C. & L. Loughmiller
Bibref 291 - Texas Wildscapes: Gardening for Wildlife (1999) Damude, N. & K.C. Bender
Bibref 297 - Trees of Central Texas (1984) Vines, Robert A.
Search More Titles in Bibliography
Web Reference
Webref 1 - Texas Native Shrubs (2002) Texas A&M University Agriculture Program and Leslie Finical, Dallas ArboretumAdditional resources
USDA: Find Vachellia rigidula in USDA PlantsFNA: Find Vachellia rigidula in the Flora of North America (if available)
Google: Search Google for Vachellia rigidula
Metadata
Record Modified: 2022-10-21Research By: TWC Staff