Blackbrush Acacia

Vachellia rigidula

Native to:
Mexico, United States

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Taxonomy

Division:
Magnoliophyta | - Flowering plants
Family:
Fabaceae
Genus:
Vachellia
Species:
Vachellia rigidula
USDA Symbol:
VARI

Growth Characteristics

Life Cycle:
Perennial
Growth Habit:
Shrub , Tree
Height:
900 cm
Light Requirements:
Part Shade
Drought Tolerance:
High
Bloom Months:
feb,mar,apr
Bloom Colors:
yellow

Wildlife Benefits

Bees:
★☆☆☆☆ Documented bee visitation (GBIF)
Butterflies & Moths:
★★☆☆☆ Documented Lepidoptera association (GBIF)
Caterpillars:
★☆☆☆☆ Recorded caterpillar host plant (HOSTS Database)

Host Plant for Caterpillars

Syssphinx heiligbrodti

Reported Fauna Sightings

Butterflies:Mimosa Yellow (Eurema nise), Reakirt's Blue (Echinargus isola)

Garden & Ecology Notes

Wildlife Value:
birds, mammals
Salt Tolerant:
Yes
Fragrant:
Yes
Fire Ecology:
Fire adapted — tolerates or benefits from fire
Fire Notes:
Resprouts vigorously after fire; fire top-kills but stimulates seed germination.

Soil Requirements

Soil Type:
rocky, well-drained calcareous soil
pH:
6.0 - 8.0 (neutral to slightly alkaline)
Drainage:
excellent drainage required
Moisture:
dry to moderate
Notes:
native to arid regions, tolerates drought

Propagation & Germination

Stratification:
Warm then cold/moist stratification (double dormancy) — 30–90 days
Scarification:
Seed coat scarification required before sowing
Germination Time:
7–30 days
Notes:
Seeds require scarification (hot water or mechanical) followed by warm stratification then cold stratification to break dormancy.