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Blackberries
Blackberries
What is being done
Economic Impact
• The first step when developing a blackberry management plan is to
assess, record and map the features of the blackberry infestation.
• Use information from site assessments to identify priority areas for
treatment.
• The prioritisation process is the basis for setting goals that are realistic,
have clear timeframes and can be measured. Often it is useful to have
both short-term and long-term goals.
• It is important to collate all the assessment and priority information
into a blackberry management plan.
• Monitor outcomes and adjust the plan if necessary.
• Retreatment and rehabilitation are important to achieve ongoing control
of blackberry infestations.
Basic Info
Blackberry has been estimated to result in a loss of production and cost of control of between $95.1 million and $102.8 million in Australia. In comparison, the aggregated benefits of blackberry have been estimated to be approximately $1.5 million per annum, indicating that the negative impacts of blackberry vastly outweigh the positive impacts (CRC, 2006).
Recognised as one of the worst weeds in Australia, blackberry was declared a Weed of National Significance in 1999. Blackberries belong to a large genus (group of species) called Rubus which includes other berry plants such as raspberries , dewberries, and loganberries.
How it has affected biodiversity
How it came to be in Australia
Blackberries were first brought to Australia by early settlers to include in gardens and hedgerows. They were also grown to provide fruit for jams and pies.
- degradation of natural environments by displacing native plants and reducing habitat for native animals.
- devaluation of visual and recreational aspects of public land, parks and reserves
- increased fire hazard caused by dead blackberry material and obstruction of access to fire trails and water for controlling fires.
- reduced available grazing land (most livestock find blackberry unpalatable) and restricted livestock access to water (when growing densely around waterbodies).
- reduced productivity of land caused by shading out of pastures and crops, and competition for soil moisture and nutrients
- problems in forestry such as the prevention of regeneration of hardwood forests and reduced capacity of plantation softwood and hardwood seedlings to establish and grow.