The latest info on plant pests, pathogens, and weeds.

Archive for July, 2008

Getting to know Giant Hogweed

This time of year, the Massachusetts Introduced Pests Outreach Project’s Pest Hotline gets a lot of calls and emails about Giant Hogweed. Giant Hogweed (Heracleum mantegazzianum) is a large, stout plant in the Carrot family, and due to its toxic sap, is a federally listed noxious weed. It has been present in Massachusetts for several […]

Plum Pox Virus in New York

Plum pox virus (PPV) has been discovered once again in New York, this time in Wayne County. This marks the third year in a row that the virus, which can impact plum, peach, apricot and other stone fruits, has been found in that state. State agricultural officials have places a one mile quarantine zone around […]

Fighting Chrysanthemum White Rust

The American Nursery & Landscape Association (ANLA) and the Society of American Florists (SAF) recently released an excellent Powerpoint presentation for growers and sellers concerned about Chrysanthemum White Rust (Puccinia horiana, “CWR”). CWR is a rust fungus that is able to infect twelve different chrysanthemum species, including pot mums, cut mums and garden mums. It […]

Emerald Ash Borer Sightings

Over the past couple of weeks, there have been two new sightings of the emerald ash borer beetle (Agrilus planipennis, “EAB”) in the USA and Canada, including Quebec (a first for the province) and Mercer County, Pennsylvania (the fifth county in PA since the beetle was first found there in 2007). The end of June […]