I cannot get rid of the wasps living in my podocarpus bush even though I have applied insecticides. What should I do?
Wasps often appear to be nesting in shrubs, but they are only visiting. Sometimes they are attracted to moisture adhering to the leaves and limbs and to the excreta from piercing sucking insects called honey dew. If you can see a nest, then you know the wasps are making your podocarpus a home, and a wasp and hornet spray should be effective. More likely the wasps are feeding on the honeydew from aphids feeding on your shrub. Try controlling the aphids with a soap or oil spray. This normally eliminates both problems.
