Caltrop (Tribulus terrestris), a pan-tropical creeper with decidedly immodest barbed burs which now terrorise fleece, hooves, paws, hands, feet and tyres across the Australian interior. … Read the full post
New Zealand Lacebark (Hoheria populnea)
New Zealand Lacebark (Hoheria populnea), an understorey tree bearing striking white swathes of autumn flowers, followed by winged seeds. A member of the Mallow family, … Read the full post
Kashmir Balsam / Touch-me-not (Impatiens balfourii)
Kashmir Balsam / Touch-me-not (Impatiens balfourii), originally a Himalayan annual elevated through horticulture to global woodland pest. The similar species, Himalayan Balsam (I. glandulifera), was … Read the full post
Brown Knapweed (Centaurea jacea)
Brown Knapweed (Centaurea jacea), an uncommon European weed of fertile pasture and degraded grassy woodlands. Due to its similarity to the more frequent Black Knapweed … Read the full post
Narrow-leaved Bladder Ketmia (presumed Hibiscus tridactylites)
Narrow-leaved Bladder Ketmia (presumed Hibiscus tridactylites), a persistent weed of inland cropping, reclassified an Oz native in 2011. Long thought a naturalised or cosmopolitan outpost … Read the full post
Sky Lupine (Lupinus ?nanus)
Sky Lupine (Lupinus ?nanus), a tiny Californian lupine growing within incipient rip rap foothills meadow at Melbourne’s Cardinia Reservoir and apparently nowhere else in Australia. … Read the full post
Yellow Archangel (Lamium argentatum)
Yellow Archangel (Lamium argentatum), a European groundcover with strikingly variegated leaves, handsome yellow flowers and a habit for perpetual growth. The plant was listed as … Read the full post
Darwin’s Barberry (Berberis darwinii)
Darwin’s Barberry (Berberis darwinii), a South American ornamental shrub haunting the edges of Dandenong forests. Available from Melbourne suppliers at least as early as 1857 … Read the full post
Winter Euryops (Euryops abrotanifolius)
Winter Euryops (Euryops abrotanifolius), a shrub daisy previously endemic to the Western Cape fynbos of South Africa. This is a plant adapted to winter rainfall … Read the full post
Winter Heliotrope (Petasites pyrenaicus)
Winter Heliotrope (Petasites pyrenaicus), a modest aster from the damper corners of Mediterranean Europe. Introduced to Britain at the beginning of the 19th c., by … Read the full post
Bigleaf Hydrangea (Hydrangea macrophylla)
Bigleaf Hydrangea (Hydrangea macrophylla), the colour-changing Asian horticultural superstar, naturalised in damp forest situations around the world. While North American species were already known to … Read the full post
Winged Groundsel (Senecio pterophorus)
Winged Groundsel (Senecio pterophorus), a South African aster distributed internationally through contaminated wool, shipping ballast and other materials. Known commonly as African Daisy (as if … Read the full post
Southern Star (Oxypetalum coeruleum)
Southern Star (Oxypetalum coeruleum), a striking South American milkweed adopted into Victorian horticulture for its sky blue flowers. Indigenous to Uruguay and SE Brazil, the … Read the full post
Buchan Weed (Hirschfeldia incana)
Buchan Weed (Hirschfeldia incana), one of the many yellow-flowered Eurasian mustards that haunt this country’s roads, paddocks and landscapes and are often best differentiated at … Read the full post
South African Weed Orchid (Disa bracteata)
South African Weed Orchid (Disa bracteata), not the orchid you want to find on your bush walks but increasingly prevalent across southern Australia. Endemic to … Read the full post
Twiggy Turnip (Brassica fruticulosa)
Twiggy Turnip (Brassica fruticulosa), an endemic mustard of the Western Mediterranean and recent introduction to Australia. Unlike Mediterranean Turnip (Brassica tournefortii), whose interwar arrival posed … Read the full post
Giant Mustard (Rapistrum rugosum)
Giant Mustard (Rapistrum rugosum), an upright European annual that in good conditions reaches heights of nearly 2 m. This ‘Short-fruited Wild Turnip’ has a growth … Read the full post
Watercress (Nasturtium officinale)
Watercress (Nasturtium officinale), a feet-wet Eurasian perennial introduced intentionally to Australia. Watercress had not found popularity on the English table at the time of the … Read the full post
Field Mustard (Brassica rapa)
Field Mustard (Brassica rapa), a yellow-flowering turnip sometimes grown as a fallow or forage crop. This plastic Eurasian species has formed the genetic base for … Read the full post
Sharp Buttercup (Ranunculus muricatus)
Sharp Buttercup (Ranunculus muricatus), a southern European mainstay of damp verges and river muds. Included on the laundry list of common weeds proclaimed by the … Read the full post
One-leaf Cape Tulip (Moraea flaccida)
One-leaf Cape Tulip (Moraea flaccida), another South African bulb more extensive in Australia than its home province. Just when One-leaf Tulip joined the two-leafed Moraea … Read the full post
Hop Clover (Trifolium campestre)
Hop Clover (Trifolium campestre), another Eurasian legume introduced to Australia from the early years of the invasion in contaminated seed of other imported forage. The … Read the full post
Sweet Melilot (Melilotus indicus)
Sweet Melilot (Melilotus indicus), an aromatic Eurasian legume introduced as a pasture improver and seed contaminant. Equally useful and disastrous but lacking the technicolor calamity … Read the full post
Tiny Vetch (Vicia hirsuta)
Tiny Vetch (Vicia hirsuta), a miniature Eurasian and African annual introduced to Australia as fodder crop or seed contaminant. In the 1864 Flora australiensis, Kew … Read the full post
Small-flowered Onion Grass (Romulea minutiflora)
Small-flowered Onion Grass (Romulea minutiflora), a minuscule cousin of the standard saccharine Onion Grass (R. rosea). Also originating in South Africa, the Small-flowered Onion Grass … Read the full post
Onion Grass (Romulea rosea)
Onion Grass (Romulea rosea), the ubiquitous magenta stars that adorn Melbourne’s springtime lawns. Onion Grass is a plant that requires many more than 2200 characters, … Read the full post
White Fumitory (Fumaria capreolata)
White Fumitory (Fumaria capreolata), another of a genus of scrabbly annuals from Western Europe which infest the Melbourne springtime. Long treated as another variation of … Read the full post
Tall Fumitory (Fumaria bastardii)
Tall Fumitory (Fumaria bastardii), another from a group of familiar West European annuals which make themselves scrabbly nuisances of gardens, crops and damaged ground. A … Read the full post
Yellow-eye Wood Sorrel (Oxalis obtusa)
Yellow-eye Wood Sorrel (Oxalis obtusa), another of Melbourne’s strikingly coloured infestations from South Africa’s Western Cape province and Namaqualand. A relative of the ubiquitous Soursob … Read the full post
Wall Fumitory (Fumaria muralis)
Wall Fumitory (Fumaria muralis), one of a group of West European annuals which make themselves scrabbly nuisances of gardens, crops and damaged ground. Perhaps mostly … Read the full post