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Integrated Pest Management Program

Department of Plant Science and Landscape Architecture, Department of Extension

Purple Loosestrife Program

purple loosestrife
Purple Loosestrife (Lyrthrum salicaria)

Integrated Pest Management (IPM) methods can be used to control invasive plants in backyards, in parks, and in natural landscapes. IPM technologies include the use of biological, mechanical, cultural, and chemical controls. Biological control, the use of natural enemies to reduce an invasive plant's population below a biological or economic threshold, is a sustainable, low-input method to control a widespread invasive plant, purple loosestrife (Lyrthrum salicaria).

The Connecticut Purple Loosestrife Program website contains photos and descriptive information about purple loosestrife and the Galerucella beetles, a PowerPoint presentation and a video with step-by-step instructions on beetle farming, maps showing Connecticut towns where the beetles have been introduced, a rearing guide for the beetles, newspaper articles, program summaries, and much more. Beetle Farmers receive timely information about the program via the Beetle Farmer List Serve (an electronic mailing list) in an interactive setting.

Galerucella leaf-feeding beetles have been approved for biological control of purple loosestrife, and these beneficial insects have been introduced into many Connecticut wetlands. The Beetle Farmer Program was initiated in Connecticut to enhance educational outreach for biological control and to increase the distribution of the Galerucella beetles in the state. If you know of a site invaded by purple loosestrife where biological control is desired, or if you would like to raise Galerucella beetles to release at a particular site, become a Beetle Farmer and start this successful program in your community. To sign up for the Beetle Farmer Program or for additional information, please contact Donna Ellis (, Senior Extension Educator at the University of Connecticut [phone (860) 486-6448]. The primary vehicles that are used for communicating information are the Connecticut Purple Loosestrife Program website and the Beetle Farmer List Serve.

The information in this document is for educational purposes only. The recommendations contained are based on the best available knowledge at the time of publication. Any reference to commercial products, trade or brand names is for information only, and no endorsement or approval is intended. The Cooperative Extension System does not guarantee or warrant the standard of any product referenced or imply approval of the product to the exclusion of others which also may be available. The University of Connecticut, Cooperative Extension System, College of Agriculture and Natural Resources is an equal opportunity program provider and employer.

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Victoria Wallace

Associate Extension Educator

University of Connecticut
New London County Extension Center
562 New London Turnpike
Norwich, CT 06360-6599

Phone 860.885.2826
Fax 860.886.1164