Leaves Twigs Stems and branches	Serviceberry (Amelanchier spp.) AFFECTING LEAVES: CONDITION CAUSE Orange leaf spots, defoliation and fruit and twig deformities. Cedar Apple Rust AFFECTING TWIGS: CONDITION CAUSE Twigs in short thick clumps Witches broom (Apiosporina collinsii)
Missoula County Extension Office; Missoula, Montana 59808 - Updated for 2006