Pest identification
What's eating my symphyotrichum laeve 'bluebird'?
Slugs & snails
Signs: Holes in newly emerging leaves and chewed stem bases in spring and autumn.
Control: Apply ferric phosphate pellets around crowns; use grit mulch; hand-pick in evening after rain.
Aster lace bugs
Signs: Pale stippling and bleaching on upper leaf surfaces; dark frass spots on undersides.
Control: Spray leaf undersides with insecticidal soap or neem oil when nymphs first appear in early summer.
Deer
Signs: Stems and foliage browsed down to stubs, especially in late summer before flowering.
Control: Use deer-exclusion fencing or deer repellent sprays reapplied after rain; plant in more sheltered spots.
Keep symphyotrichum laeve 'bluebird' pest-free
Healthy plants resist pests best. Get the basics right:
- What eats smooth blue aster — the species this cultivar belongs to
- What's wrong with my plant? — the diagnosis apps compared
- Common symphyotrichum laeve 'bluebird' problems & fixes
- Symphyotrichum laeve 'Bluebird' watering schedule
- Symphyotrichum laeve 'Bluebird' light requirements
- Full symphyotrichum laeve 'bluebird' care guide
Symphyotrichum laeve 'Bluebird' pests — FAQ
What is eating my symphyotrichum laeve 'bluebird'?
Symphyotrichum laeve 'Bluebird' (smooth blue aster) is notably more pest-resistant than novi-belgii asters, with better mildew tolerance and fewer aphid problems. Slugs may trouble young spring growth. Aster lace bugs cause stippling in dry summers. Rabbits and deer browse the foliage; deer are a serious risk in rural gardens.
How do I get rid of slugs & snails on symphyotrichum laeve 'bluebird'?
Holes in newly emerging leaves and chewed stem bases in spring and autumn. Apply ferric phosphate pellets around crowns; use grit mulch; hand-pick in evening after rain.
How do I get rid of aster lace bugs on symphyotrichum laeve 'bluebird'?
Pale stippling and bleaching on upper leaf surfaces; dark frass spots on undersides. Spray leaf undersides with insecticidal soap or neem oil when nymphs first appear in early summer.
How do I get rid of deer on symphyotrichum laeve 'bluebird'?
Stems and foliage browsed down to stubs, especially in late summer before flowering. Use deer-exclusion fencing or deer repellent sprays reapplied after rain; plant in more sheltered spots.