The Algerian ash is a medium-sized, deciduous tree growing to 20–30m tall with a trunk up to 1.5m in diameter. It is not commonly planted anymore, however large numbers of adult trees can still be seen growing in suburban areas. The flowers are produced in inflorescences, which can be male, hermaphrodite or mixed male and hermaphrodite. Flowering occurs in early spring.

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This tree is an evergreen tree growing 10-26m high with a dense canopy. It has smooth bark which is green becoming rough, scaly and brownish-grey. Trunk becomes massive and spreading at its base. The leaves reddish when young turning glossy bright green above and blue-grey beneath and three-veined from the base. Tiny yellowish or greenish-white flowers appear from September to November

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Spreading tree to 15m high with smooth bark that doesn’t have a peeling appearance with bipinnate green leaves. Whitish or yellow flowers in terminal panicles appear from November to March. Light to dark brown, shiny, rattling pods with raised bumps. Poisonous and invades river banks and subtropical coastal bush.

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Hairy senna is a large, upright plant with deep orange-yellow irregular flowers. The stems and leaves are covered with long, pale greyish-white hairs. The leaflets are egg-shaped and the fruit is slightly sickle-shaped. The seeds are olive or brown.

Published in Invasive Plants

Spreading tree to 15m high with rough bark that doesn't have an appealing appearance. Light green leaves and whitish or yellow flowers appear from November to March. Straw-coloured, shiny, rattling pods with raised bumps.

Published in Invasive Plants
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