Mysore raspberry

Also known as White blackberry or Hill raspberry, Mysore raspberry is originally from India and South-East Asia. It forms dense, impenetrable thickets and has become invasive in some areas where it has been introduced, including Hawaii and the Galapagos Islands. It is a Class 3 noxious weed around the North Coast region. Mysore raspberry is a large scrambling shrub, 3-4.5 metres high, with sharp, hooked thorns. Its leaves are hairy and made up of from five leaflets to nine leaflets, 2.5-6 cm long, with toothed edges. The upper side is dark green while the underside is white Pink or mauve […]

mahonia with fruit 

Mahonia

Mahonia, also known as Chinese holly grape, is a native of China and has been introduced to many countries as a garden plant. It has invaded bushland and pasture on the Dorrigo Plateau. This is the first time it has been known to naturalise (reproduce in the wild) in Australia, but its apparent rapid spread indicates potential for it to have significant impact. It has also been identified as a potential problem in New Zealand. Mahonia is listed as a Class 3 noxious weed across the North Coast and Northern Tablelands of NSW. A shrub, generally up to four metres […]

 

Cecropia

Cecropia are rapidly growing trees originating from tropical America. They are pioneer species that can quickly establish in disturbed areas and have become weeds in South America, Malaysia and Africa. In the past, Cecropia species (including Cecropia peltata) have been imported into Australia for private plant collections, but all known plants have been destroyed due to their invasive potential. They are listed as Class 2 noxious weeds across the North Coast region. They are a rapidly growing tree, usually 10-20 metres tall, but can reach up to 25 metres. The plants can be distinguished by the large U-shaped leaf scars […]

Common pampas grass 

Pampas grass

Pampas Grass is a large, long-lived, perennial tussock grass more than two metres high with prolific fluffy seed heads (up to three metres high). It is common in open, sunny places with damp soils and on disturbed sites. Sharp, cutting bluish-green leaves grow up to two metres long. Flowers occur in summer, developing well above the foliage in two sex forms on separate plants. Female flowers are white and fluffy, while bisexual flowers are yellow, pale pink or pale mauve and almost hairless. Each plume produces up to 100,000 seeds in late summer/autumn and up to 50 plumes can occur […]

Mistflower in flower 

Mistflower

Mistflower is distinguished by multicellular, purple-striped, non-glandular hairs on upper stems and leaf stalks. It has flat-topped terminal clusters of small white flowers (florets). Its florets are all tubular. Seeds have hairs on ribs. The seeds are five-angled, black, 1-2 mm long, topped with bristles 3-4 mm long which readily separate from seeds. Stems are purplish and cylindrical. Leaves are opposite, mostly 7.5 cm long and 2.5 cm wide, toothed along the edges and tapered at each end. Flowers occur in white heads, 4 mm to 6 mm wide, in flat-topped showy clusters (corymbs). Bracts around the heads are hairy. […]

Serrated Tussock infestation 

Serrated tussock

Serrated tussock (formerly Stipa trichotoma) is a large, long-lived tussock grass about 50 cm high and 15 cm to 25 cm diameter at the base. Mature plants have drooping leaves that may extend plant diameter to 75 cm. Stems are much-branched, initially erect and up to 95 cm long, twice as long as the leaves. They droop at maturity to touch the ground and have shallot-like bases. The many leaves are thin, fine, 0.5 mm in diameter and up to 50 cm long. They are tightly rolled, appearing circular in cross-section, with small serrations. The leaves are green in summer, […]

 

Mother of millions

Mother of millions is a native of Africa and Madagascar and was introduced to Australia as a garden plant. It is a serious weed on the coast and the north-west slopes and plains of New South Wales. Consequently, it is a declared noxious weed in these areas. This perennial herb is a smooth, fleshy, succulent plant growing to one metre or more in height. It is distinguished by erect, simple, cylindrical stems. Leaves are about 2 cm-15 cm long and succulent, without a stalk. They are pale grey to speckled brown with dark green patches and a shallow groove on the […]

groundsel bush 

Groundsel bush

Groundsel bush is an environmental weed and a forestry weed because it readily invades forests and bushland. It is a densely-branched shrub, usually between 1.5 metres and three metres high, although it sometimes grows into a small tree up to seven metres high. Its small branches are striated and hairless. Groundsel has wedge-shaped leaves, usually with a few large teeth towards the apex. They are up to about 5 cm long and up to 4 cm wide on a stalk to 1.5 cm long. Leaves are dull green or pale green, waxy to touch and alternate. Stems are green at […]

 

Koster’s curse

Koster’s curse is a declared Class 1 Noxious Weed in NSW and is the target of a national eradication program. It is a highly invasive shrub, growing up to five metres tall and has the potential to spread rapidly over many parts of Australia. Koster’s curse forms dense thickets, which can smother pasture and native vegetation in a similar manner to lantana. It is quick-growing and could cause major problems for primary industries. It invades disturbed areas including the edges of clearings and stream-banks, along fence lines, paths and roadways. The weed prefers humid tropical lowlands and therefore could spread […]