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Although blackberry (Rubus fruiticosus complex) is found in most districts of New Zealand it is mainly a problem weed in Northland, Central and Eastern districts of the North Island, Nelson and the West Coast.
Although blackberry is found in most districts of New Zealand it is mainly a problem weed in Northland, Central and Eastern districts of the North Island, Nelson and the West Coast.
A soft-wooded, bushy and leafy perennial that grows up to 2 metres tall or more. The flowers are green and are followed by dense cylindrical clusters of dark purple berries.
There are several species of dock that are commonly found in New Zealand pastures and crops. Broad-leaved dock is the most common, however curled dock and fiddle docks are also very prevalent.
Hemlock thrives in damp conditions and is commonly found throughout New Zealand in ditches and riverbeds as well as on banks and roadsides. This weed quickly establishes in waste areas where there is no other plant competition.
Giant Buttercup is a hairy perennial, with erect solid stems up to 1.5 m tall. It grows from a stout rhizome.
Fathen is very common throughout New Zealand but is especially abundant in arable districts. Growing mainly in spring and summer, this erect weed can grow up to 2m tall.
Also commonly referred to as “Amaranthus”, these weeds are widely spread throughout New Zealand, and get their name from the reddish colour towards the base of the plant and tap root. They are commonly found in arable crops and can grow up to 1 metre high.
Spurrey is an erect or sprawling annual plant that can grow very densely and effect crop establishment. This weed is commonly found in cultivated land, gardens, roadways, bare ground and sand dunes. It is sometimes referred to as Yarr.
Ragwort is often a problem on cattle and horse properties as it is very poisonous. Sheep are less susceptible to ragwort poisoning but can suffer liver damage, which can eventually lead to death.