RT Journal Article SR Electronic T1 Grassroots Citizen Science in Urban Spontaneous Vegetation JF Arboriculture & Urban Forestry FD International Society of Arboriculture SP 116 OP 128 DO 10.48044/jauf.2018.010 VO 44 IS 2 A1 Seamans, Georgia Silvera YR 2018 UL http://auf.isa-arbor.com/content/44/2/116.abstract AB This paper documents the research processes and outcomes of four collegial citizen-science projects about urban spontaneous vegetation. The artist- and designer-initiated collegial projects in this study use a variety of art, design, and natural history strategies to collect and analyze data, as well as to visualize and disseminate their findings. In addition to physical outcomes, the project leaders use legitimating narratives and discourses about urban ecosystem services to counter negative claims about urban spontaneous vegetation, which are often pejoratively labeled ‘weeds.’ A challenge and opportunity for projects focused on altering the normative bias against so-called “weeds” is mainstreaming a new nature ethic for this type of urban flora.