Why does my oranmental pear tree have curling leaves and shiny black spots on the leaves
The tree is in a pot against a brick wall. There is another next to it which is ver healthy and as no issues.
The shiny black spots on the leaves looks like scale. You will need to control this pest now when they are young and crawling. The product to use is called PestOil. When applied, this product blocks the breathing pores of the insect causing suffocation and rapid death. Thorough coverage of pests is therefore essential. Be careful not to use when temperatures exceed 32 degrees C or when plants are suffering from moisture stress. Check your plants just to make sure there is no scale hiding on the leaves and stems.
Answered: 25 Jan, 2013