| Organization | Organization Website |
| Assocation of Professional Landscape Designers (APLD), Connecticut Chapter | https://apldct.com/ |
| Bartlett Arboretum | http://bartlettarboretum.org/ |
| Connecticut Botanical Society CBS) | http://www.ct-botanical-society.org/ |
| Connecticut Chapter, American Society of Landscape Architects | http://www.ctasla.org/ |
| Connecticut Christmas Tree Growers Association | http://www.ctchristmastree.org/ |
| Connecticut College Arboretum | http://www.conncoll.edu/the-arboretum/ |
| Connecticut Conservation District, CT River Coastal | http://conservect.org/Default.aspx?alias=conservect.org/ctrivercoastal |
| Connecticut Conservation District, North Central | http://conservect.org/Default.aspx?alias=conservect.org/northcentral |
| Connecticut Conservation District, Northwest | http://conservect.org/Default.aspx?alias=conservect.org/northwest |
| Connecticut Conservation District, Southwest | http://conservect.org/Default.aspx?alias=conservect.org/southwest |
| Connecticut Department of Energy and Environmental Protection (CT DEEP) | http://www.ct.gov/deep/site/default.asp |
| Connecticut Department of Transportation (CT DOT) | https://portal.ct.gov/DOT |
| Connecticut Envirothon | http://www.ctenvirothon.org |
| Connecticut Forest and Park Association (CFPA) | http://www.ctwoodlands.org/ |
| Connecticut Gardener Magazine | http://www.conngardener.com |
| Connecticut Grounds Keepers Association (CGKA) | http://www.cgka.org/ |
| Connecticut Horticultural Society (CHS) | cthort.org |
| Connecticut Invasive Plant Working Group (CIPWG) | http://cipwg.uconn.edu |
| Connecticut Land Conservation Council | http://www.ctconservation.org/ |
| Connecticut Master Gardener Association (CMGA) | http://www.ctmga.org/ |
| Connecticut Nursery and Landscape Association (CNLA) | http://www.cnla.biz |
| Connecticut Ornithological Association | http://www.ctbirding.org/ |
| Connecticut Resource Conservation and Development Area, Inc. | www.ctrcd.org |
| Connecticut Training and Technical Assistance Center | https://t2center.uconn.edu/ |
| Connecticut Tree Wardens Association | http://www.cttreewardens.org/ |
| Connecticut Urban Forest Council | http://cturbanforestcouncil.org/ |
| CT DEEP Wildlife Division | https://portal.ct.gov/DEEP/Wildlife/ |
| CT NOFA Organic Land Care Program | https://nofa.organiclandcare.net/ |
| Experiment Station Associates | agstationfriends.org |
| Farmington River Watershed Association | http://frwa.org/ |
| Federated Garden Clubs of Connecticut, Inc. (FGCCT) | ctgardenclubs.org |
| Friends of Goodwin Forest | http://www.friendsofgoodwinforest.org/ |
| Hardy Plant Society of New England, Connecticut Chapter | hardyplantct@gmail.com |
| Joshua’s Trust | joshuastrust.org |
| Long Island Invasive Species Management Area (LIISMA) | www.LIISMA.org |
| Lyman Hall High School Vernon E. Cleaves Agricultural Science & Technology Program | www.LHAgEd.org |
| Mad Gardeners, Inc. | http://www.madgardeners.org/ |
| Naugatuck Valley Community College, Horticulture Program | http://www.nv.edu/Credit/Horticulture |
| Quinnipiac River Watershed Association (QRWA) | www.qrwa.org |
| Sustainable CT | https://sustainablect.org/ |
| The Connecticut Agricultural Experiment Station | http://www.ct.gov/caes/site/default.asp |
| The Connecticut Audubon Society | https://www.ctaudubon.org/ |
| The Friends of Bolton Lakes | https://www.friendsofboltonlakes.org/ |
| UConn College of Agriculture, Health and Natural Resources | http://www.cag.uconn.edu/canr |
| UConn Department of Plant Science and Landscape Architecture | http://www.plantscience.uconn.edu/ |
| UConn Extension | http://www.extension.uconn.edu |
| UConn Extension Master Gardener Program | http://mastergardener.uconn.edu/ |
| UConn Home and Garden Education Center | http://www.ladybug.uconn.edu |
| USDA Natural Resources Conservation Service | http://www.nrcs.usda.gov/wps/portal/nrcs/site/ct/home/ |
| White Memorial Conservation Center | https://www.whitememorialcc.org/ |
| Wild Ones, Mtn. Laurel (CT) Chapter | https://wildones.org/chapters-2/chapters-in-connecticut/ |