Leaf curling under pink/white tibouchina - tips burning then drop off
20 November 2012 04:58 AM
It could be that there is a sap sucking insect on your tibouchina causing the leaf to curl and brown around the edges. Check over the plant and see if there are any pests present. You can then use a product such as Yates Nature's Way Vegie & Herb Spray Concentrate to kill these pest. You might also like to check the drainage where your shrub is planted. You may need to improve the drainage if water is puddling and not draining away.