What's attacking my bush?!

Hi there can anyone tell me what's causing this and how could I save it?
Thanks.

 

Hello nimbus to GC. It's a job to say what's causing the damage but here are a few pointers....If there are webs and droppings then you can be fairly sure that it's caterpillar infestation. The cure for that is a spray of Bacillus thuringiensis. It kills the caterpillars without doing any harm to other creatures. A decent garden centre should be able to advise you about brand names. If it's a fungal disease you'll probably be able to see powdery deposits on the underside of the leaves. On an ornamental plant, your best bet is a systemic fungicide which will travel all through the plant and fight the disease. Again, someone in a garden centre (not a DIY shed) should be able to tell you which products are suitable, or perhaps someone on GC can help with currently available names! Good hygiene also helps co mbat fungal diseases, so collect up any fallen, infected leaves and dispose of them carefully. If it's an insect infestation, you'll be able to see the insects. Systemic insecticide or () soapy water (not strictly legal but effective) will deal with those.