07/06/2026
WHY ARE SOME GUM TREES LOOKING SICK?
You may have noticed some gum trees looking a little tired lately.
Some of our River Red Gums and other eucalypts are currently being affected by seasonal brown lerp – a tiny sap-sucking insect that feeds on leaves and can cause them to change from green to purple, then red, before turning brown and dropping.
While it can look alarming, this is a natural occurrence and something we see most years.
The good news is that trees usually recover on their own, producing fresh new growth as conditions improve.
Our team is continuing to monitor trees across the district.
Nature also has its own pest control team. Small birds such as pardalotes and honeyeaters feed on lerps and help keep populations in balance. That's why planting a diverse mix of native trees, shrubs and groundcovers is so important.
Through our revegetation programs, we're creating healthier habitats that support birds, insects and the long-term health of our urban forest.
You can also help by planting bird-attracting species in your own garden.
Our 'Firewise and Sustainable Landscape Design' booklet lists suitable native species.
Download a copy from our website: https://council.mountbarker.au/gardendesignbooklet
You can also contact us to request a printed copy.
