| Connecticut Community Gardening AssociationNew Haven | Form 990-N | No figure |
| Friends of the Farm River Estuary IncBranford | Form 990-N | No figure |
| Park Watershed IncHartford | Form 990-N | No figure |
| Burleson Institute IncCos Cob | Form 990-N | No figure |
| River Advocates of South Central Connecticut IncWallingford | Form 990-N | No figure |
| Bethany Community Garden IncBethany | Form 990-N | No figure |
| Green Line Albania IncStorrs Mansfield | Form 990-N | No figure |
| Friends of West Side Pond IncGoshen | Form 990-N | No figure |
| Plantin Seeds IncFalls Village | Form 990-N | No figure |
| Westport Evergreen IncWestport | Form 990-N | No figure |
| Mansfield Environmental Trust IncStorrs Mansfield | Form 990-N | No figure |
| Voda FoundationGreenwich | Form 990-N | No figure |
| Enfield Garden ClubEnfield | Form 990-N | No figure |
| Alewife Cove ConservancyNew London | Form 990-N | No figure |
| Pachaug Pond Weed Control Association IncJewett City | Form 990-N | No figure |
| Friends of Pachaug Forest IncGriswold | Form 990-N | No figure |
| Wernickes Foundation of America IncGreenwich | Form 990-N | No figure |
| Nod Road Preservation IncAvon | Form 990-N | No figure |
| Nutmeg State Orchid SocietyBristol | Form 990-N | No figure |
| Thames River Innovation Places IncGroton | Form 990-N | No figure |
| Tucker Memorial FundFairfield | Form 990-N | No figure |
| Oxford Main Street Project CorporationOxford | Form 990-N | No figure |
| Friends of Topsmead State Forest IncLitchfield | Form 990-N | No figure |
| Protect Our PollinatorsNewtown | Form 990-N | No figure |
| Friends of Seaside State ParkNew Canaan | Form 990-N | No figure |
| Friends of North CoveOld Saybrook | Form 990-N | No figure |
| Tightlined Conservation Coalition IncLyme | Form 990-N | No figure |
| Three Tiers for Connecticut IncNorwalk | Form 990-N | No figure |
| Eastern Connecticut Land Bank IncPawcatuck | Form 990-N | No figure |
| New England Historic Cemetery Restoration Project IncDanielson | Form 990-N | No figure |
| Earth Day Every Day CT IncWaterford | Form 990-N | No figure |
| Northwest Connecticut Sportsmans Land Trust IncHarwinton | Form 990-N | No figure |
| Eco Titans IncManchester | Form 990-N | No figure |
| Webb Mountain Discovery Zone IncorporatedMonroe | Form 990-N | No figure |
| New London Trees IncNew London | Form 990-N | No figure |
| Natural Dividends IncWest Hartford | Form 990-N | No figure |
| Pollinator Pathway East LymeEast Lyme | Form 990-N | No figure |
| March Against Revenge Porn IncWolcott | Form 990-N | No figure |
| Weston Garden Club IncWeston | Form 990-N | No figure |
| Planet New Canaan IncNew Canaan | Form 990-N | No figure |
| FROMEARTH4EARTH IncMiddlebury | Form 990-N | No figure |
| West Rock Ridge Park Association IncHamden | Form 990-N | No figure |
| Simsbury Pollinator Pathway IncSimsbury | Form 990-N | No figure |
| Cans-4-a-Cause of Greater MiddletownMiddletown | Form 990-N | No figure |
| Charles Island Reforestation LLCWallingford | Form 990-N | No figure |
| Connecticut Outdoor Recreation AllianceRockfall | Form 990-N | No figure |
| Granby Wildflower MeadowGranby | Form 990-N | No figure |
| Blackberry River Valley Protection Alliance IncEast Canaan | Form 990-N | No figure |
| Financial Industry Climate Leadership Network LtdWashington Depot | Form 990-N | No figure |
| Shelton Clean-Up ProjectShelton | Form 990-N | No figure |