Managing Leaf-Feeding Insects and Fungal Spots on Young Cherry Tree

Insect Damage

A 5-foot Stella cherry in Iowa shows leaves eaten from the edges inward with a thin brown border, plus small brown spots that become holes. No insects are visible, suggesting nocturnal or small pests (e.g., caterpillars, beetles).

Treatment

Spray the entire canopy and trunk with acephate (Orthene), a systemic insecticide that kills feeding insects. Cover both leaf surfaces thoroughly. Repeat if needed per label.

Fungal Leaf Spots

The brown spots with holes are likely fungal leaf spots (e.g., cherry leaf spot). They are cosmetic, may cause early leaf drop, but don't threaten tree health. No fungicide needed unless severe and recurrent.

Cultural Care

Continue proper watering and mulching. Avoid overhead irrigation to reduce fungal spread.