Pest identification
What's eating my oakleaf hydrangea 'snow queen'?
Aphids
Signs: Curled, sticky new growth; honeydew deposits; ants trailing up stems
Control: Water jet or insecticidal soap spray. Avoid excess nitrogen fertilizer, which promotes the soft growth aphids prefer.
Vine weevil / root weevil (Otiorhynchus sulcatus)
Signs: Irregular notched scalloping on leaf margins (adults); wilting and poor vigor from root damage (larvae in soil)
Control: Apply beneficial nematodes (Steinernema kraussei) to moist soil in late summer to target larvae. Sticky tape around container rims stops adults climbing potted plants.
Deer
Signs: Browsed shoots, stripped bark on young stems, trampled growth; most severe in late summer and winter
Control: Spray deer repellent (Bobbex or Deer Out) on foliage and stems; reapply after rain. Fence young plants until established.
Keep oakleaf hydrangea 'snow queen' pest-free
Healthy plants resist pests best. Get the basics right:
- What eats oakleaf hydrangea — the species this cultivar belongs to
- What's wrong with my plant? — the diagnosis apps compared
- Common oakleaf hydrangea 'snow queen' problems & fixes
- Oakleaf Hydrangea 'Snow Queen' watering schedule
- Oakleaf Hydrangea 'Snow Queen' light requirements
- Full oakleaf hydrangea 'snow queen' care guide
Oakleaf Hydrangea 'Snow Queen' pests — FAQ
What is eating my oakleaf hydrangea 'snow queen'?
Oakleaf Hydrangea 'Snow Queen' is a native-derived shrub with good pest tolerance, but aphids and root weevils are the most common problems. Vine weevil notches leaf edges and larvae damage roots. Deer heavily browse oakleaf hydrangeas; rabbits chew young stems in winter. Check leaves and soil around the root zone in autumn.
How do I get rid of aphids on oakleaf hydrangea 'snow queen'?
Curled, sticky new growth; honeydew deposits; ants trailing up stems Water jet or insecticidal soap spray. Avoid excess nitrogen fertilizer, which promotes the soft growth aphids prefer.
How do I get rid of vine weevil / root weevil (otiorhynchus sulcatus) on oakleaf hydrangea 'snow queen'?
Irregular notched scalloping on leaf margins (adults); wilting and poor vigor from root damage (larvae in soil) Apply beneficial nematodes (Steinernema kraussei) to moist soil in late summer to target larvae. Sticky tape around container rims stops adults climbing potted plants.
How do I get rid of deer on oakleaf hydrangea 'snow queen'?
Browsed shoots, stripped bark on young stems, trampled growth; most severe in late summer and winter Spray deer repellent (Bobbex or Deer Out) on foliage and stems; reapply after rain. Fence young plants until established.