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sword like spiral seed weed

Persistent weed native to Southern Europe, Central to Western Asia & Northern Africa. Found in disturbed sites, around farm yards, roadsides, wastelands.
Broad leaves 8 to 10cm across with 5 to 7 lobes on long 11 to 13 cm stalks, Leaves can be toxic to mammals & can cause staggers in lambs.
M. parviflora is able to flower & seed within 2 months of germination. Germination occurs after Autumn & Winter rains. Photo is of a young plant in May.
White to pink flowers with 5 petals, 4 to 6 mm long with twisted buds in axillary clusters. Flowering Mar through to Nov.
The fruit is a dry disc of joined sepals that split into many sections when ripe & dry, each containing one seed. Seeds remain viable for possibly 100 years.
This weed has a single deep taproot which renders it resistant to glyophosphate. Remove single isolated young plants by hand. Consult your local herbicide retailer for best spray during April to July.
Similar species are M.nicaeensis or native species Lavatera plebeia .

*Euphorbia terracina

*Lupinus cosentinii

OXALIDACEAE
Creeping Oxalis, Creeping Wood Sorrel, Procumbent Yellow Sorrel, Sleeping Beauty

MIMOSACEAE
Coastal Wattle

Widely spread throughout the world. Used for soil preservation &^ nitrogen fixing especially along coastal areas. A quick growing tree with a lifespan of 5 to 6 years.

ROSACEAE
Dog Rose

Widely naturalised in SA, NSW, VIC, TAS & WA.
An introduced escaped cultivated garden plant.
18 to 50 cm tall x 3 to 20mm wide, strap like leaves & 3 angled stems. Strong garlic, onion smelling leaves when crushed or bruised.
White flowers with a green stripe running down the middle, 6 petals, pendulous bell shaped in clusters borne on a stalk 10-25mm long. Spring & Summer.
Fruit is initially green, rounded capsule4 to 7mm across maturing to light brown containing several small black seeds.
Stock will not eat it. Causes dermatitis in some people.
A declared weed in the Borossa & Mount Lofty Ranges.
Dig out isolated plants, carefully removing all the roots. Spray larger infestations before flowering.

Coast Tea-tree is a large shrub or small tree to 5 m tall. It has grey-green, pointy leaves, and, in spring, white, five-petalled flowers, and cup-shaped capsules. Mature trunks are often gnarled and twisted, and generally grey in colour, with peeling papery bark.

Sallow Wattle is arguably the worst environmental weed along the Surf Coast. It is in plague proportions in Anglesea and Aireys Inlet, and along the Great Ocean Road. At our working bees, Sallow Wattle is normally the most prolific weed we encounter. It is spreading rapidly along Victoria’s coast, and into the Great Otway National Park, smothering and destroying indigenous vegetation. Seed is spread by birds, and frequent control burns around Anglesea and Aireys Inlet have also helped its spread. Sallow Wattle can fix nitrogen and so increase soil fertility, which may affect the growth of indigenous plants that prefer low fertility soils. Seed production from Sallow Wattle is very prolific, with several hundred seeds per square metre of soil, and the seeds remain viable for up to a decade.

Weed of the month September 2011

Blue Periwinkle Vinca major

Green Honey Myrtle Melaleuca diosmifolia is endemic to WA and has become naturalised in Victoria. A dense shrub sometimes growing to a height of 4 m with narrow oval or elliptical shaped leaves arranged alternately directly onto the stem. The bottle-brush flowers are lime-green.

Bluebell Creeper grows as a dense, tangled shrub to 2 m high, or as twining climber of 3–5 m. It bears distinctive and attractive, blue, bell-shaped flowers, which usually hang down from spring to summer. After flowering, the plant produces blue-green, sausage-shaped berries that darken as they ripen. Since the berries are such a popular food for birds and animals, the seed in their droppings are scattered far and wide. As the plants mature, large colonies, many metres wide, are formed, smothering and strangling our indigenous vegetation. It is a very hardy plant, tolerating shade, full sun and extended dry periods.