Fireblight (Erwinia amylovora) Overview: Caused by bacteria Erwinia amylovora Onset in the spring as bacterial cells ooze in a yellow-amber liquid from existing cankers on infected plants Bacteria spread to flowers, leaves, … Read More
Fletcher Scale (Parthenolecanium fletcheri) GDD Window (base 50): 600-1200 Overview: Adults are 2-4mm in diameter, dome-shaped soft scales, brown to tan in color, and usually found on twigs and stems Nymphs are … Read More
Cottony Camellia Scale (Pulvinaria floccifera) GDD Window (base 50): 802-1388 Overview: Soft scales with a cottony mass of eggs found on branches and leaves of host plants Mature females are … Read More
Calico Scale (Eulecanium cerasorum) GDD Window (base 50): 750-1200 (all eggs hatched by 1500 GDD) Overview: Rounded, dome-shaped insects with a mottled brown and white pattern, up to ¼” in … Read More
Indian Wax Scale (Ceroplastes ceriferus) GDD Window (base 50): 700-1200 Overview: Soft-bodied insects covered in white, waxy secretions, and found on branches and stems Adult females are rounded, hemispherical, white, … Read More
Two Spotted Spider Mite (Tetranychus urticae) GDD Window (base 50): 363-618 (emerging overwintering females) Overview: Microscopic (1/50”) arachnids with oval bodies, typically yellow-orange in color, with two dark spot on each … Read More
Spotted Lanternfly (Lycorma delicatula) GDD Window (base 50): Adult emergence at 1100-1700 Overview: Overwinter as egg masses on smooth surfaces, looking like a patch of mud In mid-May, juveniles hatch … Read More
Oriental Beetle (Anomala orientalis) GDD Window (base 50): 450-1500 Overview: Small, oval beetles with a tan to dark brown shell, often with darker mottling Adults are about 8-11 mm long … Read More
Flower Fly (Syrphidae spp.) Overview: AKA hoverfly, syrphid fly Adults resemble bees (yellow or white and black striped abdomens), but are stingless flies & are not predators 1/8 to 5/8″ long … Read More
European Pine Sawfly (Neodiprion sertifer) GDD Window (base 50): 35-145 – hatched larvae, 100-195 – 1st larvae active Overview: Also known as Redheaded pine sawfly Mature larvae are grayish-green, 18-25 mm … Read More