00 Introduction

00 Introduction

A weed is a plant growing where it’s not wanted. That doesn’t mean it’s bad, just bad here. Some weeds can be beautiful. In the suburbs, where most weeds have escaped from gardens into the bush or along waterways, they were once highly-prized...
01 January Celtis sinesis (ULMACEAE) Chinese Elm

01 January Celtis sinesis (ULMACEAE) Chinese Elm

Description Fast-growing semi-deciduous large tree with smooth bark and scalloped leaves. Native to China, Korea and Japan. Leaves have three main veins at the base. Photo: Mark Crocker Why it’s bad Creates monocultures where little else will grow. Adults can have...
02 February Anredera cordifolia (BASELLACEAE) Madeira Vine

02 February Anredera cordifolia (BASELLACEAE) Madeira Vine

Description A soft, fast-growing vine with heart-shaped leaves. Large numbers of tubers form along stems and from the roots, producing many more plants when they sprout. Photo: Mark Crocker Why it’s bad It can engulf native species, reducing light penetration often...
03 March Aristolochia elegans (ARISTOLOCHIACEAE) Dutchman’s Pipe

03 March Aristolochia elegans (ARISTOLOCHIACEAE) Dutchman’s Pipe

Description A smothering climber with heart-shaped leaves and pipe-shaped flowers native to Brazil and Argentina. Crushed leaves and cut stems give off an offensive “nail polish” smell. Photo: Mark Crocker Why it’s bad It attracts the Richmond Birdwing...
04 APRIL Senna pendula (CAESALPINIACEAE) Easter Cassia

04 APRIL Senna pendula (CAESALPINIACEAE) Easter Cassia

Description Easter Cassia is a native of South America. Around Easter it produces showy yellow flowers, then masses of seed in long pods. Photo: Mark Crocker Why it’s bad It “jumps the garden fence” and spreads throughout bushland, outcompeting local species and...
05 May Pennisetum purpureum (POACEAE) Cane Grass

05 May Pennisetum purpureum (POACEAE) Cane Grass

Description A giant grass resembling sugar cane introduced as fodder for cattle, quickly colonising creek edges when the farms became suburbs. Photo: Mark Crocker Why it’s bad Cane Grass forms dense thickets offering little of value to native fauna. It chokes...