What's eating my tree peony?

Tree Peony (Paeonia suffruticosa) can be troubled by aphids on young shoots in spring, scale insects on woody stems, and thrips that scar petals. Deer will browse tender new growth. In North America, Japanese beetles attack blooms and foliage. Scale insects are often the most persistent pest on established woody stems.

Soft clusters on new shoots and buds in spring; honeydew and distortion Insecticidal soap or neem oil spray; remove infested tips; encourage natural predators

Brown or white waxy bumps on woody stems; yellowing leaves and reduced vigour over time Scrub off with a soft brush and soapy water; horticultural oil in late winter before bud break

Silver-streaked or distorted petals; premature petal drop on open flowers Remove damaged flowers; improve air circulation; insecticidal soap on buds before they open

Removal of emerging spring growth; woody stems rubbed by antlers in autumn Deer repellent sprays; wire caging around new plants; deer fencing for long-term protection