The answer to 'shrub pests' is that common shrub pests include aphids, spider mites, scale insects, and fungal diseases. Symptoms can include discolored, wilting, or distorted leaves, sticky sap, and dieback. Solutions depend on the specific pest, but may involve insecticidal sprays, horticultural oils, or pruning affected areas. DIY treatment is often possible for minor infestations, but for severe or recurring problems, it's best to call a professional landscaper or arborist.
Shrub pests can be challenging to diagnose and treat effectively. A professional assessment is recommended if you're unsure of the cause or have an extensive infestation that isn't responding to DIY methods.