Boxwood Psyllid

What it looks like

New growth on boxwood cups or curls around itself instead of growing flat. If you pull the curled leaves apart, you'll often see a white, waxy fuzz where the insect nymphs are hiding inside.

Often mistaken for: Boxwood leafminer

When it shows up in the Triangle

Nymphs spend the winter tucked inside the buds, then become active as new growth comes out in spring, around April. There's just one generation a year.

Where you’ll see it

Boxwood, especially American boxwood.

What you can do

• Check new growth in spring for cupped or curled leaves
• Prune out the affected shoot tips — this removes the nymphs hiding inside
• Keep in mind damage is mainly cosmetic and established plants can usually tolerate it
• Avoid unnecessary treatment if the plant is otherwise healthy