A fast, often multi-stemmed evergreen wattle of 6 to 30 m with sickle-shaped leaf-like phyllodes, yellow flower spikes and twisted ear-shaped pods.

A small, often multi-stemmed maple (now treated botanically as Acer tataricum subsp.

A fast, irregular, round-crowned tree and the only native maple with compound leaves, with green young twigs and little fall color.

A dense, rounded shade tree with broad five-lobed leaves whose stalks ooze milky sap when broken, gold flower clusters before the leaves, flat-winged seeds and dull yellow fall color.

A fast, weedy tree (40-60 feet) with long compound leaves that smell like burnt peanut butter when crushed, smooth gray bark and clusters of papery winged seeds.

A flat-topped, umbrella-shaped small tree (20-40 feet) with ferny leaves and fluffy pink powder-puff flowers in early summer that hummingbirds visit.

A tough, usually evergreen shade tree of about 15 m (to 30 m) with a dense round crown of glossy pinnate leaves, honey-scented flowers and olive-like fruit.

A massive, dense evergreen shade tree of 15 to 30 m with glossy leaves that smell of camphor when crushed and black berries that birds spread everywhere.

A slender, elegant eucalypt to 50 m with powdery white to coppery bark and narrow leaves that smell strongly of lemon when crushed (the source of citronellal oil).

A tall, straight eucalypt to 45 m with a smooth trunk mottled in cream, grey, pink and blue-grey that gives it its name.

A thorny small tree or large shrub with silvery, willow-like leaves, fragrant yellow flowers in late spring and mealy silver-to-red fruits that birds spread.

A dense, thorny large shrub or small tree with silver-backed leaves, fragrant creamy flowers in late spring and masses of red, silver-flecked berries in fall that are tart, edible and rich in lycopene.

Australia's most widespread eucalypt, a spreading tree of about 30 m with smooth white-to-red-brown bark shed in ribbons, lining the Murray-Darling and almost every inland river.

A fast, upright semi-evergreen tree of 18 to 30 m (to 40 m at home) with fern-like silvery-backed leaves and golden toothbrush flowers full of nectar.

The common waxleaf hedge shrub of Texas subdivisions, a dense evergreen 6-12 feet tall (to 20 as a small tree) with thick glossy leaves, cream flowers in late spring and blue-black berries.

A fast evergreen shrub or small tree (25-40 feet) with glossy dark leaves, panicles of heavy-scented cream flowers in late spring and masses of blue-black berries that birds carry into every greenbelt and creek bottom in Austin, where it forms dense evergreen thickets that shade out everything beneath.

A fast, short-lived tree (30-40 feet) with lacy dark leaves, fragrant lilac flowers in spring and clusters of yellow marble-sized berries that hang on all winter.

An iconic sprawling coastal tree to 20 m with a canopy that can spread 10 to 50 m, leathery dark leaves and crimson bottlebrush flowers around Christmas.

A fast, rounded, short-trunked tree with glossy, variably lobed leaves and sweet white-to-purple blackberry-like fruit in early summer on female trees.

A thorny, deep-rooted shrub or tree normally about 10 m (to 20 m) that fixes nitrogen, tolerates extreme drought and salinity and produces sweet pods that livestock spread.

A dense, much-branched evergreen shrub or small tree of 5 to 10 m with grey-green leaves and small inedible black olives spread by birds and foxes.

An extremely fast tree with huge velvety heart-shaped leaves, showy upright clusters of fragrant violet foxglove-like flowers before the leaves in spring, and woody capsules that release thousands of tiny winged seeds.

A tough, heat- and drought-proof shade tree (30-35 feet) with fine compound leaves that turn fiery orange and red in fall even in Texas, which made it a nursery favorite and a common Austin street tree.

A dense evergreen shrub or small tree, usually 3 to 6 m, with large glossy leaves, white flower spikes and black cherries that birds carry into woodland.

The ubiquitous white-flowering street tree of the 1980s and 1990s (30-50 feet), pyramidal with glossy leaves that turn purple-red in fall.

A thorny, multi-stemmed shrub or small tree with glossy oval leaves that stay green late into fall, dark peeling bark with orange inner wood, thorn-tipped twigs and clusters of black berries on female plants that birds eat and scatter (the fruit is a purgative, hence the name).

The seaward mangrove of the Americas, a tree of 5 to 20 m standing on arching red prop roots in the water, with leathery leaves and cigar-shaped propagules that drop and float to new mud.

A fast-growing, thorny, nitrogen-fixing tree of 15 to 25 m with fragrant white pea flowers that make prized honey and very rot-resistant timber.

A broad, fast-growing willow to 25 m whose brittle twigs snap with an audible crack and root wherever they wash up, so a single tree can colonise a whole river.

A dense, multi-stemmed evergreen shrub or small tree of 3 to 10 m (rarely 15 m) with glossy aromatic compound leaves and bright red berries at Christmas that birds spread.