White ball acacia

• Thornless shrub or small tree generally 2–7m tall, sometimes up to 12m, with single short trunk.
• Leaves are bipinnate, 10–21cm long, usually have 10–17 pairs of pinnae.
• Each leaf is borne on a stalk 20–45 mm long and has 9–25 pairs of branchlets. Leaf stalks and leaf branchlets have a covering of soft hairs.
• Pinnae are 2.5–5cm long, each bears 20–40 pairs of leaflets. Leaflets are small, 2.4–5mm long, 0.5–2mm wide, with pointed tips and entire margins.
• Flowers are whitish, in globular or elliptical clusters 1–1.5cm across.
• Pods are flat, thin-walled, papery, oblong, 3–9cm long, 6–15mm wide, with straight or sinuate margins.
• Pods are acute at base and apex, with stripe 7–12mm long and beak 2–7mm long.
• Pods contain 8–12 circular seeds 2.5–3.2mm across.

• Best adapted to seasonally dry tropical areas with annual rainfall 400–3,000mm.

• Found at scattered locations around Queensland.

• Produces large number of seeds.
• Seed banks are long-lived.
• May also produce new shoots through root suckering.
• Flowering occurs year-round.

Environmental

• Escapes cultivation and invades nearby habitats.
• Forms dense thickets that exclude more desirable pasture plants and native vegetation.
• Potential to become widespread and abundant invasive pest of much of north Queensland's dry tropical woodlands and riparian areas, extending to subcoastal and coastal southern Queensland.

• Spread by cattle and water.

• Find out how farmers can prevent weed spread.
• Find out how gardeners and outdoor enthusiasts can prevent weed spread.

• Before undertaking any preventative or control actions, contact our Customer Service Centre.

• White ball acacia is a prohibited invasive plant under the Biosecurity Act 2014.
• You must not keep, move, give away, sell or release into the environment. Penalties may apply.
• You must not take any action reasonably likely to exacerbate the biosecurity threat posed by white ball acacia.
• You must take any action that is reasonably likely to minimise the biosecurity threat posed by white ball acacia.
• You must report all sightings to Biosecurity Queensland within 24 hours.