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Ageratina riparia (mistflower)
Ageratina riparia is unpalatable to livestock and is toxic. It reduces the carrying capacity of pastures and rangeland and restricts...
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Helianthus tuberosus (Jerusalem artichoke)
H. tuberosus is a tall herb that can out-compete invaded natural vegetation and occurs as an agricultural weed. Further spread by deliberate...
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Plantago major (broad-leaved plantain)
P. major is native to Europe and Asia but is now widely distributed around the world, particularly in temperate, but also tropical parts. It is...
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Caesalpinia decapetala (Mysore thorn)
C. decapetala is an adaptable, vigorous, scrambling, very prickly shrub, climber or tree with showy yellow flowers. C. decapetala is capable of...
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Crupina vulgaris (bearded creeper)
C. vulgaris is a clear example of an invasive species that 'came in under the radar,' undetected for decades after the initial introductions and...
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Vaccinium corymbosum (blueberry)
Shrubs 2-3 m high sometimes reaching 5 m, crown-forming, occasionally suckering, rarely reproducing by root sprouts 1-2 m from the parent; 2-5 or...
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Arceuthobium americanum (lodgepole pine dwarf mistletoe)
A. americanum does not spread rapidly and cannot be considered highly invasive. It does, however, constitute a serious threat as a result of its...
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Abutilon theophrasti (velvet leaf)
A. theophrasti continues to expand its distribution in North America, Europe, Korea and Japan, by cultivation as a fibre crop, and by accidental...
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Cannabis sativa (hemp)
General The seeds (achenes) are round to nearly lens-shaped, with a round base, surface green-brown to grey, marbled or unmarbled,...
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Parkinsonia aculeata (Mexican palo-verde)
This is one of the most widespread and well-known woody weeds in hot regions, and has become naturalized and shown weedy tendencies in all...
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