Pest identification
What's eating my nandina harbour dwarf?
Aphids
Signs: Soft, pale colonies on new shoot tips; honeydew drips, leaves curl and blacken with sooty mold
Control: Knock off with a firm water spray; insecticidal soap or neem oil; improve air circulation around the low canopy
Scale insects
Signs: Crusty bumps on stems; weakened growth and sooty mold on honeydew below infested areas
Control: Apply horticultural oil when crawlers are active; prune and dispose of heavily colonized branches
Slugs and snails
Signs: Holes in foliage close to ground level; slime trails on stems and soil nearby
Control: Apply iron phosphate slug bait; lift dense low growth to increase drying airflow; hand-pick at night after rain
Keep nandina harbour dwarf pest-free
Healthy plants resist pests best. Get the basics right:
Nandina Harbour Dwarf pests — FAQ
What is eating my nandina harbour dwarf?
Nandina Harbour Dwarf is a low-spreading, very pest-resistant cultivar. Aphids are the most common nuisance on new spring growth. Scale insects occasionally appear on older wood. Its low, dense habit can shelter slugs in wet climates. Japanese beetles may feed on foliage in regions where they are established.
How do I get rid of aphids on nandina harbour dwarf?
Soft, pale colonies on new shoot tips; honeydew drips, leaves curl and blacken with sooty mold Knock off with a firm water spray; insecticidal soap or neem oil; improve air circulation around the low canopy
How do I get rid of scale insects on nandina harbour dwarf?
Crusty bumps on stems; weakened growth and sooty mold on honeydew below infested areas Apply horticultural oil when crawlers are active; prune and dispose of heavily colonized branches
How do I get rid of slugs and snails on nandina harbour dwarf?
Holes in foliage close to ground level; slime trails on stems and soil nearby Apply iron phosphate slug bait; lift dense low growth to increase drying airflow; hand-pick at night after rain