http://www.noxiousweeds.org.au Noxious Weed Control Wed, 26 Aug 2009 23:27:28 +0000 http://backend.userland.com/rss092 en Green Cestrum is a straggling perennial shrub2-3 metres high. It has one or more brittle stems. The leaves are green, up to 10 centimetres long and have a foul smell when crushed. Its flowers are seen from late spring to autumn . They are found in yellow trumpet ... http://www.noxiousweeds.org.au/green-cestrum Golden Dodder is an annual leafless flowering plant. It parasitises host plants by suckers called haustoria. The haustoria penetrate the tissues of the host plant and take out valuable nutrient reducing crop and pasture production . The stems are threadlike and usually bright yellow. The flowers are bell shaped ... http://www.noxiousweeds.org.au/golden-dodder Common Pear is a low growing green cactus up to 1.5 metres high and made up of flattened segments or pads 10-30 centimetres long and 7-20 centimetres across. Leaves measuring 3-4 millimetres long are rarely seen. Areoles have a cluster of small brown woodish hairs and up to 11 ... http://www.noxiousweeds.org.au/common-pest-pear Galvanised Burr is often the first plant to colonise at a site after drought or overstocking. Seeds are spread by livestock and vehicles. The leaves are bluish- green, obviate, flat, 12 to18 mm long and 7 mm wide. Leaves are densely hairy giving the plant a galvanized appearance. The single ... http://www.noxiousweeds.org.au/galvanised-burr Chilean Needle grass is closely related to serrated tussock. It is relatively unpalatable and reduces farm productivity .It can be confused with some of the native spear grasses. It has hairs on the leaf surface and has tufts of hair at the junction of the leaf blade and the sheaf. ... http://www.noxiousweeds.org.au/chilean-needle-grass Noogoora Burr is a robust summer growing annual plant found in creek beds, river flats or moist flood prone areas. It can invade cultivation and pastures and can grow up to 2 metres in height with spreading branches covering an area of 2 metres. Its broad lobed leaves are on ... http://www.noxiousweeds.org.au/noogoora-burr Bridal Creeper is a major weed of native bushland. The foliage smothers surrounding plants and dense mats of tubers prevent root growth of other plants. The leaves are ovate cladodes and are 1 to 4.5 cm long, 5 to16 mm wide and glossy green in colour. Flowers are greenish ... http://www.noxiousweeds.org.au/bridal-creeper St John’s Wort is a weed that spreads over long distances by humans, livestock, and feral animals. The plant contains a toxin which causes photosensitization in livestock. This may lead to reduced productivity. It has distinctive flowers and if the leaves are held up to the light small oil glands ... http://www.noxiousweeds.org.au/st-johns-wort Silverleaf Nightshade is a summer growing weed . It may be confused with other species but there are features which distinguish it from these plants. It may cause serious crop and pasture losses if not controlled. It may be toxic to stock in some situations. The plant grows ... http://www.noxiousweeds.org.au/silverleaf-nightshade Spiny Burr Grass is an erect and spreading annual grass growing up to 60 centimetres high. It forms a spike like panicle 3-8 centimetres long consisting of up to 40 spiny burrs. It grows most readily on disturbed sandy soil. The burrs formed by this weed are difficult to ... http://www.noxiousweeds.org.au/spiny-burr-grass