Pyracantha Leaf Miner: Systemic Insecticides for Large Infestations

Leaf miners on a 10x10 ft pyracantha create silvery, separated leaves. Larvae feed inside leaves, protected from contact sprays. Populations fluctuate yearly; damage is cosmetic, not fatal.

Control Strategies

• Early spring spray (April): Target egg hatch with contact insecticides before larvae enter leaves.
• Remove infested leaves before spring if feasible.
• Systemic insecticides (best for large plants): Acephate (Orthene) or imidacloprid applied to soil or foliage during egg hatch. These move into leaf tissue to kill miners. Not for food crops.
• Adult-targeted sprays: Apply when adults lay eggs; ineffective once tunneling starts.

Check local nurseries for systemic products labeled for ornamentals (often sold for roses). Always follow label directions.