Hudsonia conducts detailed studies of the ecological relationships of an invader to other organisms, and develops management approaches that integrate these ecological relationships with site-specific goals and other ecosystem services such as water quality maintenance.

We currently focus on purple loosestrife, common reed (Phragmites) , water-chestnut, and Japanese knotweed. We have prepared a Phragmites Management Sourcebook and we offer a professional workshop on Phragmites ecology and management.

We have also published reviews of the ecology and management of water-chestnut and Japanese knotweed.

• A Comparison of Phragmites australis in Freshwater and Brackish MarshEnvironments in North America
• Introduced Purple Loosestrife as Host of Native Saturniidae (Lepidoptera)
• Loosestrife: Purple Peril or Purple Prose?
• Occurrence of Ailanthus altissima in a Maryland Freshwater Tidal Estuary
• Terrestrial Insects Associated with Lythrum salicaria, Phragmites australis, and Typha angustifolia in Hudson River Tidal Marsh
• What Reed (Phragmites) Ecology Tells us about Reed Management: Confronting Reed’s Lurid Reputation

Hudsonia, a tax-exempt not-for-profit corporation of the State of New York, classified 501(c)(3) by the Internal Revenue Service, relies on the generous, tax-deductible contributions from members of our community to sustain our research and education. We appreciate your support of our work.