Lillypilly resilience dark spotty growth on tops of leaves

Thank you for contacting Yates.

Looks like the plant is affected by scales. To control, try 'Yates Pest Oil - Insect Control Spray'. It's available in both a convenient ready-to-use spray and a concentrate form. Controls citrus leaf miner, scales, mites, mealybug, aphids and white fly on citrus, grapes, fruit trees, roses and ornamentals. Click here for more info on this product: https://www.yates.com.au/product/garden-pest-control/yates-pestoil-concentrate

To help to thicken up the growth, regular pruning and feeding. Tr feed every 6-8 weeks with 'Yates Dynamic Lifter Soil Improver and Plant Fertiliser' as a complete, soil-conditioning  fertiliser. It's certified for use in organic gardens and will help create a nutrient rich soil for better root growth, stronger plants and more flowers and fruit! It can be used on gardens all year round, including native plants. Click here for more info on this product: https://www.yates.com.au/product/garden-fertilisers/certified-organics/yates-dynamic-lifter-soil-improver-plant-fertiliser