HOST PLANTS:Boxwood Buxus spp. DAMAGE:Female flies puncture foliage creating a small yellow hole on the underside of leaves to lay eggs. Larvae mine leaves by feeding on the mesophyll layer, forming a blister on the surface of foliage and often discoloration. The...
PEAR TRELLIS RUST HOST PLANTS: Ornamental and fruit bearing Pear trees. Alternate hosts Junipers and Cypress. DAMAGE:The disease is easily detected on pear leaves which become covered with orange spots in early summer and grey, fuzzy growth in the fall. It is usually...
HOST: Crabapples and apple vary widely in their resistance to scab. Related (but different) species of the fungus that cause apple scab produce scab on hawthorn, mountain ash and pyracantha. DAMAGE: Apple scab describes the disease as it appears on the disfigured host...
