- "Life in a City Park : An Ecologist Reflects on Boston Common" (2021)
- "Wildflowers of Shenandoah National Park & The Blue Ridge Parkway" (2020)
- "Wildflowers of Boston & the Greater Metropolitan Area - 4th Edition" (2019)
- "Urban Ecologist: Reflections on the Natural History of Boston" (2018)
- "Massachusetts Field Guide" (2018)
- "Common Weeds of Southern New England : A Foray Into Field Botany"(2017)
- "The Nature of Boston: An Explorer's Guide"(2017)
- "Urban Wildlife Companion"(2015)
- "Common Weeds of New England: a Natural History with Identification Tips” (2014)
- "Urban Ecology: Landscapes Reimagined by Humans and Nature" (2013)
- "The Boston Harbor Islands, An Explorer's Guide" (2012)
- "The Cambridge Field Guide to New England Wildflowers: Over 800 Plants in Full Color with Detailed Descriptions " (2011)
- "The Cambridge Field Guide to Wild Plants Around Your Home: Growing, Foraging, Identifying Invasive Species " (2010)
- "Urban Wildlife: In and Around Philadelphia : Mammals, Birds, Reptiles, Amphibians, Insects” (2010)
- "Wildlife In the Chesapeake Region Mammals, Birds, Reptiles, & Amphibians " (2009)
- "A Natural History of Massachusetts" (2005)
Articles:
- "Invasive plants in a warming climate: Challenges for New England and the northeastern United States" in New England Wild Flower Society’s Conservation Notes No. 67
- “Invaders on our Doorsteps - 38 Invasives for New England Home Gardening, Landscaping, and Natural Areas” Conservation Notes: Number 83, New England Wild Flower Society (Spring 2012): 1