11/06/2026
⚠️ Grevillea robusta (Silky Oak) – Not as harmless as it looks! ⚠️
Many people don't realise that Grevillea robusta can cause serious skin irritation in some individuals.
The leaves, flowers, bark, and fresh timber contain a chemical called grevillol, which is very similar to the irritant found in poison ivy. Contact with the foliage, sap, sawdust, or freshly cut wood can cause an itchy, red, blistering rash. Symptoms are often delayed and may not appear for 24–72 hours after exposure.
This is one of the reasons Grevillea robusta is sometimes referred to as "Australia's Poison Ivy."
When pruning or removing these trees, it is recommended to wear gloves, long sleeves, eye protection, and avoid direct contact with fresh sawdust and sap.
The flower buds, seed pods, and young shoots also contain compounds capable of releasing small amounts of cyanide and should never be eaten.
If you have a Grevillea robusta on your property and require pruning or removal, ensure appropriate safety precautions are taken or contact your local qualified arborist.
🌳 Empire Tree Services
📍 Auckland
