Vachellia farnesiana (L.) Wight & Arn.
Acacia farnesiana (L.) Willd.
Acacia farnesiana (L.) Willd. var. farnesiana
Acacia minuta (M.E. Jones) R.M. Beauch.
Acacia minuta (M.E. Jones) R.M. Beauch. ssp. densiflora (Alexander ex Small) R.M. Beauch.
Acacia smallii Isely
Mimosa farnesiana L.
Pithecellobium minutum M.E. Jones
Vachellia densiflora Alexander ex Small
Mimosa, prickly acacia, sweet acacia, needle bush, huisache
Mimosa is pantropical, found in the Caribbean, the Guianas, from the southern USA to Chile, most of Australia, much of Africa, southern Europe, and southern Asia. It is evergeen over most of its range, but in some habitats it is deciduous. In some areas mimosa is considered an invasive species.
Plants: A small tree or shrub, with multiple trunks. Reaches a height of 6½-23' (2-7 m). Stems are deep brown or gray, covered with long, sharp paired thorns up to 2" (5 cm) in length.
Flowers: “Puffballs” are yellow, very fragrant, and ⅜-½" (1-1.5 cm) in diameter. They appear nearly all year. An essential oil called Cassie, which smells like violets, is distilled from the flowers.
Fruits: Pods are glossy, 1½-3" (4-7.5 cm) × ½" (1.5 cm), straight or curved, and pointed on both ends. They are dark brown to blackish, and contain chestnut-brown seeds ¼-⁵/₁₆" (7-8 mm) × ⅛" (4 mm).
Vachellia farnesiana at the University of Florida Environmental Horticulture site (PDF)
Vachellia farnesiana at Chris A. Martin's site at Arizona State University
Vachellia farnesiana on Wikipedia
Vachellia farnesiana on Plants for a Future
Vachellia farnesiana on eFloras
Vachellia farnesiana at cabi.org’s Invasive Species Compendium
Vachellia farnesiana at the University of Florida Institute of Food and Agricultural Sciences
Vachellia farnesiana description by Thomas H. Kent, last updated 21 Sep 2020.
Range: Zones 9a-11: