White Prunicola Scale (Pseudaulacaspis prunicola) GDD Window (base 50): 707-1151 Overview: Overwinter on bark as mated females Most infestations occur on the stems and major branches Armored scale, difficult to control … Read More
Cryptomeria Scale (Aspidiotus cryptomeriae ‘Kuwana’) GDD Window (base 50): 533-820 Overview: Beware of the scale hiding beneath a transparent cover! Overwinter as immature nymphs in a waxy covering on needles … Read More
Euonymus Scale (Unaspis euonymi) GDD Window (base 50): 533-820 Overview: Armored scale, waxy covering protects them from predators and pesticides (Overwinter on bark as mated females) Scale crawlers are light-yellow in … Read More
Black Vine Weevil (Otiorhynchus sulcatu) GDD Window (base 50): 400-900 Overview: Also known as taxus weevil Larvae are white, legless, and C-shaped with a brown head Adults are gray to … Read More
Greater Peach Tree Borer (Synanthedon exitosa) GDD Window (base 50): 600-1800 Overview: Overwinters as various larvae stages Adults are often mistaken for wasps when flying Females are dark blue … Read More
Emerald Ash Borer (Agrilus planipennis) GDD Window (base 50): 450-500 Overview: Adults are wood-boring beetles that are bright metallic green in color, bullet-shaped, and 1/3” long with two pairs … Read More
Bronze Birch Borer (Agrilus anxius) GDD Window (base 50): 400-880 Overview: Adults are black beetles with a shiny greenish-bronze color on their backs, about ½” long Mostly found on … Read More
Lacewings (Crysoplera spp.) GDD Window (base 50): emergence at 253 GDD Overview: Popular, commercially available beneficial insects Adults ½ to ¾” long, delicate, green or brown, small heads, large … Read More
Root Disease Oomycetes Overview: These are NOT fungi** …but called ‘water molds’ Cell walls are cellulose based, not chitin based like fungi & insects Require Oomycete specific materials [Oomycides] Often … Read More
Rhizosphaera Needle Cast Overview: Caused by several fungi species in the genus Rhizosphaera Impacts spruce trees Specifically, Colorado blue spruce, white spruce, and Oriental spruce Norway and red spruce are more resistant … Read More