Pest identification
What's eating my dwarf korean lilac?
Lilac Borer (Podosesia syringae)
Signs: Wilting or snapping of shoots in summer; sawdust-like frass at holes in the stem base
Control: Apply permethrin to stems in mid-spring when adult moths are active; remove and destroy infested stems promptly
Oystershell Scale
Signs: Gray oyster-shaped scale insects encrust stems; branches weaken and die back
Control: Dormant horticultural oil; contact insecticide at crawler stage in late spring
Aphids
Signs: Curled, sticky shoot tips in spring; honeydew attracts ants
Control: Insecticidal soap or neem oil; strong water jet; natural predators usually take over by summer
Rabbits
Signs: Bark stripped from the base of stems in winter, girdling young plants
Control: Hardware cloth cylinders around the base; repellent sprays in autumn
Keep dwarf korean lilac pest-free
Healthy plants resist pests best. Get the basics right:
Dwarf Korean Lilac pests — FAQ
What is eating my dwarf korean lilac?
Dwarf Korean Lilac 'Palibin' is more disease-resistant than common lilac but still attracts lilac borers, oyster shell scale, and aphids. The lilac borer is the most damaging, tunneling into stems and causing sudden dieback. Rabbits can gnaw the bark at the base in winter. Regular pruning and monitoring keep plants vigorous.
How do I get rid of lilac borer (podosesia syringae) on dwarf korean lilac?
Wilting or snapping of shoots in summer; sawdust-like frass at holes in the stem base Apply permethrin to stems in mid-spring when adult moths are active; remove and destroy infested stems promptly
How do I get rid of oystershell scale on dwarf korean lilac?
Gray oyster-shaped scale insects encrust stems; branches weaken and die back Dormant horticultural oil; contact insecticide at crawler stage in late spring
How do I get rid of aphids on dwarf korean lilac?
Curled, sticky shoot tips in spring; honeydew attracts ants Insecticidal soap or neem oil; strong water jet; natural predators usually take over by summer
How do I get rid of rabbits on dwarf korean lilac?
Bark stripped from the base of stems in winter, girdling young plants Hardware cloth cylinders around the base; repellent sprays in autumn