| Friends of the National Arboretum Inc | | Washington, DC | Local | 6 | 2024 | $405,972 |
| Morris and Gwendolyn Cafritz Foundation | | Washington, DC | Local | 5 | 2024 | $160,000 |
| C K Williams Foundation | | Pittsburgh, PA | National | 4 | 2024 | $100,000 |
| Congressional Sports for Charity | | Alexandria, VA | Local | 3 | 2024 | $75,000 |
| Mars Hq Regional Foundation | | New York, NY | National | 5 | 2024 | $45,000 |
| Corn Refiners Association Inc | | Washington, DC | Local | 3 | 2024 | $35,500 |
| William H Donner Foundation Inc | | Tarrytown, NY | National | 4 | 2024 | $30,184 |
| Nora Roberts Foundation Inc | | Glenn Dale, MD | National | 4 | 2024 | $28,500 |
| International Paper Company Foundation | | Memphis, TN | National | 5 | 2024 | $28,000 |
| Frank and Evelyn Schmidt Family Foundation | | Boring, OR | Local | 6 | 2024 | $24,500 |
| Harold Rubenstein Family Charitable Foundation | | Washington, DC | Local | 4 | 2024 | $21,500 |
| Dimick Foundation | | Bethesda, MD | Local | 5 | 2024 | $18,000 |
| Susan Lynde Duval Phipps Foundation Inc | | Mclean, VA | National | 3 | 2024 | $15,000 |
| Lloyd E Mitchell Foundation | | Chevy Chase, MD | Local | 5 | 2024 | $15,000 |
| Jean T and Heyward G Pelham Foundation | | Wilmington, DE | National | 3 | 2024 | $7,500 |
| The Albert and Linda Rosecan Charitable Foundation | | Mclean, VA | National | 1 | 2024 | $5,000 |
| Frederick and Diana Prince Foundation | | Washington, DC | National | 4 | 2024 | $1,650 |
| Charles H Miller Charitable Foundation | | Glenelg, MD | Local | 6 | 2023 | $70,000 |
| Burpee Foudation Inc | | Lenox, MA | Local | 4 | 2023 | $54,000 |
| Croplife America | | Arlington, VA | National | 2 | 2023 | $15,500 |
| Spectemur Agendo Inc | | Washington, DC | Local | 6 | 2023 | $10,200 |
| National Confectioners Association | | Washington, DC | Local | 1 | 2023 | $10,000 |
| The National Environmental Education and Training Foundation | | Washington, DC | National | 1 | 2023 | $9,765 |
| W H Francis Foundation | | Dallas, TX | Local | 2 | 2023 | $1,700 |
| Humanities Council of Washington DC Inc | | Washington, DC | Local | 1 | 2022 | $25,000 |
| Corina Higginson Trust | | Charlott Hall, MD | Local | 3 | 2022 | $22,500 |
| United Way of the National Capital Area | | Vienna, VA | Local | 3 | 2022 | $18,341 |
| The Institute for Spiritual Research Inc | | Sedona, AZ | National | 2 | 2022 | $1,200 |
| Casey Trees | | Washington, DC | National | 1 | 2021 | $50,000 |
| American Public Gardens Association | | Wilmington, DE | National | 2 | 2021 | $34,750 |
| Harman Cain Foundation | | Needham, MA | Local | 2 | 2021 | $5,000 |
| Robert and Margaret Mcnamara Foundation 3 | | Washington, DC | Local | 1 | 2021 | $1,500 |
| National Bonsai Foundation Incorporated | | Washington, DC | — | 2 | 2020 | $328,131 |
| Koches Family Foundation Inc | | Naples, FL | National | 1 | 2020 | $1,200 |
| Westrock Foundation | | Atlanta, GA | National | 1 | 2020 | $275 |
| Buckley Family Endowment Inc | | Arlington, VA | Local | 1 | 2020 | $100 |
| Monumental Sports & Entertainment Foundation | | Washington, DC | National | 1 | 2019 | $29,765 |
| National Trust for Historic Preservation in the United States | | Washington, DC | National | 1 | 2019 | $10,000 |
| Walter and Jean Boek Global Autoimmune Institute | | Mclean, VA | Local | 1 | 2019 | $500 |
| The Kay Family Foundation Inc | | Germantown, MD | — | 1 | 2018 | $15,000 |
| Malkin Fund Inc | | New York, NY | National | 1 | 2018 | $500 |