No. 11/July 2, 2009

Last Weekly Issue
This is the last weekly issue of the Home, Yard, and Garden Pest Newsletter for this year.

Japanese Beetles
Japanese beetle adults were found on June 26 in central Lee County, June 27 in northeastern Kendall County, June 29 in southwestern Ogle County, and July 1 in DuPage County.

Spittlebugs tend to be more numerous in wet springs. Although most of these insects do not cause severe damage, the spittle of the nymphs is noticeable to commercial clientele.

Cedar-Quince Rust
Cedar-quince rust is caused by a fungal pathogen called Gymnosporangium clavipes. This fungus infects more than four hundred and eighty plant species in eleven genera in the rose family, including mountain ash, hawthorn, quince, flowering quince, serviceberry and apple.

White Mold Weather
White mold is the common name for a fungal disease that occurs in very wet conditions. Other common names include watery soft rot, cottony rot, and Sclerotinia disease.

Vinca Blights
There is a fungal disease problem of vinca (periwinkle) that can be very persistent once it invades a site. This disease is called Vinca stem blight.

Invasive Species Spotlight--Giant Hogweed
Giant Hogweed is a recent exotic weed introduced into the Illinois landscape. It can degrade natural landscapes and possesses health risks to people.

Beware the Pretty Vines Found in the Landscape
Vining plants are often desirable in the home landscape. They cleverly disguise carefully placed trellises and their form seems to take on a life of its own. Some, however, can be classified as weeds.