Long Leaf Willow Primrose – Darkwood
The recent success in drastically reducing long-leaf willow primrose across local waterways highlights the power of collaboration between the community and council. This fast-spreading invasive plant has long threatened native habitats by outcompeting local species and altering wetland ecosystems. Community education sessions, site inspections, and coordinated treatment programs helped ensure effective control while preventing the plant’s regrowth.
Ongoing monitoring and follow-up revegetation have already shown positive results, with native plants returning to previously infested areas. The council extends its thanks to all participants for their efforts and commitment to protecting the region’s natural environment. Together, these actions demonstrate that sustained community involvement is key to long-term weed management success.
The Beetles Arrive in the Kalang: A Natural Solution for Madeira Vine
Madeira vine (Anredera cordifolia), known for its fast-growing, twining stems and fleshy underground tubers, Madeira vine can smother native bushland, overwhelming trees and shrubs under a dense curtain of growth. Once established, it’s incredibly difficult to remove by hand, as any small piece of stem or tuber left behind can regrow into a new infestation.
To help tackle this persistent weed, scientists are breeding a biological control agent: a leaf-eating beetle from Madeira vine’s native range in South America. These beetles have been carefully tested by the DPI to ensure they feed only on Madeira vine and not on other plants. Once released, they set to work by consuming the vine’s leaves, weakening the plant’s ability to grow and spread. Over time, this reduces the vine’s dominance, allowing native ecosystems to recover.
Unlike chemical spraying or physical removal, biological control is a long-term, sustainable approach that supports natural balance. The beetles won’t eradicate Madeira vine completely, but they will help keep it in check — tipping the scales in favour of native plants and wildlife.
With two release sites along the Kalang, we are hoping to establish an army of Madeira-eating beetles to give our bushland a helping hand.
Image 1 - Release site 1: along the banks of the Kalang River.
Image 2 - Each "unit" contains 200 adult beetles ready to get to work in their new home.
Image 3 - Release site 2: further upstream along the banks of the Kalang River.
Image 4 - A 'nest' of plant material is made on the ground, under a healthy section of vine weed, the beetles are then emptied onto this nest and left to their lunch.