The giant stinging tree or ‘gimpi gimpi’ is one of four Dendrocnide species found within the Urticaceae family in Australia. Gimpi gimpi is understood to be a Kabi Kabi word meaning 'devil'.
True to name, this rainforest giant can grow up to 40m tall with a smooth-tubed trunk and buttressed base.
Small pink-purple flowers become purple-black berries from March to August annually. The flesh is edible but too dangerous to harvest. Many birds including the green catbird and regent bowerbird feed on the giant stinging tree fruit.
Its bright-green, heart-shaped leaves have saw-toothed edges and can span up to 30cm across. Thousands of silica-tipped, hollow hairs give the leaves a soft, velvety appearance. Various insects that feed on them create a lace-like pattern in the foliage.
Skin contact with the leaves and stems of the giant stinging tree can cause debilitating pain and possible hospitalisation. The acid-burn sensation can linger for several months.
The giant stinging tree favours disturbed parts the rainforest, meaning it is more likely to grow along the trail edges than in the denser, undisturbed thickets.
Learn to identify this remarkable plant and stay on the paths when visiting Mary Cairncross.
There are three short circuits which traverse the beautiful understorey in the reserve.
Protecting our forest
You will come across plenty of the animals in the reserve. Help care for our wildlife by giving them space and not feeding them. Human food can make them sick and too much attention can stress them. Find out more about how can you help protect our forest.
Come for a walk
There are three short circuits which traverse the beautiful understorey in the reserve.