| 0 | PI 187006 | | Nepeta raphanorhiza Benth. | Iowa, United States | | | Historic | 1950 | COLLECTED | | | | | | | | 1668012 | PI 187006 |
| 1 | PI 136092 | No. 4873 | Nepeta sp. | Afghanistan | | | Historic | 1940 | COLLECTED | 10/12/1939 | Dry slope at Burchao Pass | | 2736 | | | | 1854474 | PI 136092 |
| 2 | PI 129012 | | Nepeta nepetella L. | Spain | | | Historic | 1938 | COLLECTED | | | | | | | | 1845183 | PI 129012 |
| 3 | PI 126335 | No. 3230 | Nepeta sp. | Afghanistan | | | Historic | 1937 | COLLECTED | 08/01/1937 | Rubat | | 2559 | | | | 1841867 | PI 126335 |
| 4 | PI 126336 | No. 3295 | Nepeta sp. | Badakhshān, Afghanistan | | | Historic | 1937 | COLLECTED | 08/10/1937 | Daraim | | 2559 | | | | 1841868 | PI 126336 |
| 5 | PI 122903 | No. 1546 | Nepeta laevigata (D. Don) Hand.-Mazz. | Himachal Pradesh, India | | | Historic | 1937 | COLLECTED | 10/27/1936 | Koti, Kulu | | 2709 | | | | 1834534 | PI 122903 |
| 6 | PI 118648 | No. 1073 | Nepeta erecta (Royle ex Benth.) Benth. | Gilgit-Baltistan, Pakistan | | | Historic | 1936 | COLLECTED | 07/31/1936 | Above Karagbal | | 3010 | | | | 1828127 | PI 118648 |
| 7 | PI 114264 | No. 45 | Nepeta discolor Royle ex Benth. | Himachal Pradesh, India | | | Historic | 1936 | COLLECTED | 09/28/1935 | Kyibar | | | | | | 1811887 | PI 114264 |
| 8 | PI 105891 | | Nepeta sp. | India | | | Historic | 1934 | COLLECTED | | Taho, Spiti | | 3010 | | | | 1793813 | PI 105891 |
| 9 | PI 105892 | | Nepeta floccosa Benth. | Jammu and Kashmir, India | | | Historic | 1934 | COLLECTED | | Hemis | | 3311 | | | | 1793814 | PI 105892 |
| 10 | PI 103384 | | Nepeta nuda L. | Unknown | | | Historic | 1933 | COLLECTED | | Union of Soviet Socialist Republics | | | | | | 1791732 | PI 103384 |
| 11 | PI 103385 | | Nepeta cyanea Steven | Unknown | | | Historic | 1933 | COLLECTED | | Union of Soviet Socialist Republics | | | | | | 1791733 | PI 103385 |
| 12 | PI 103386 | | Nepeta grandiflora M. Bieb. | Unknown | | | Historic | 1933 | COLLECTED | | Union of Soviet Socialist Republics | | | | | | 1791734 | PI 103386 |
| 13 | PI 101570 | | Nepeta curviflora Boiss. | Israel | | | Historic | 1932 | COLLECTED | | | | | | | | 1493129 | PI 101570 |
| 14 | PI 95676 | 'Souvenir de Andre Chaudron' | Nepeta sibirica L. | Netherlands | | | Historic | 1932 | COLLECTED | | | | | | | | 1781985 | PI 95676 |
| 15 | PI 26446 | | Nepeta cataria L. | District of Columbia, United States | | | Historic | 1909 | COLLECTED | | | | | | | | 1588316 | PI 26446 |
| 16 | PI 16816 | | Nepeta cataria L. | District of Columbia, United States | | | Historic | 1905 | COLLECTED | | | | | | | | 1574315 | PI 16816 |
| 17 | NA 88890 | 'Chartreuse on the Loose' | Nepeta hybr. | Michigan, United States | NA | | Not Available | 2024 | DEVELOPED | PRE 03/2024 | | | | | Cultivar | Full name as recorded at the U.S. National Arboretum: Nepeta 'Chartreuse on the Loose' | 2190952 | NA 88890 |
| 18 | NA 86702 | 'Early Bird' | Nepeta hybr. | | NA | | Not Available | 2020 | | | | | | | Cultivar | Full name as recorded at U.S. National Arboretum: Nepeta 'Early Bird'. | 2154858 | NA 86702 |
| 19 | NA 85895 | 'Purrsian Blue' | Nepeta hybr. | | NA | | Not Available | 2019 | | | | | | | Cultivar | Full name as recorded at U.S. National Arboretum: Nepeta 'Purrsian Blue'. | 2154487 | NA 85895 |
| 20 | NA 83760 | 'Walker's Low' | Nepeta racemosa Lam. | | NA | | Not Available | 2016 | | | | | | | Cultivar | Full name as recorded at U.S. National Arboretum: Nepeta racemosa 'Walker's Low'. Obtained for the Friendship Garden renovation. | 2153367 | NA 83760 |
| 21 | W6 32807 | BH2007 08025 | Nepeta sp. | Georgia | W6 |  | Not Available | 2007 | COLLECTED | 08/29/2007 | Tana River Valley; upper Boshurebi village on road from Gori. Kartli Province. | 41.86055556, 43.94861111 | 1135 | roadside. Shallow rocky soil. 75% slope, south facing. | Wild material | collected from population of 15+ plants. Larger plants in deeper soil. | 1740590 | W6 32807 |
| 22 | NA 77130 | 'Six Hills Giant' | Nepeta hybr. | | NA | | Not Available | 2007 | | | | | | | Cultivar | Full name as recorded at U.S. National Arboretum: Nepeta 'Six Hills Giant'. | 2150938 | NA 77130 |
| 23 | W6 17619 | W6 17619 | Nepeta cataria L. | Michigan, United States | W6 | | | 1995 | COLLECTED | 10/22/1995 | Collected from the Beal Botanical Garden at Michigan State University, East Lansing. | | | | Uncertain improvement status | | 1508763 | W6 17619 |
| 24 | W6 17265 | W6 17265 | Nepeta cataria L. | Washington, United States | W6 | | | 1995 | COLLECTED | 08/29/1995 | Collected from former homesite near a creek at Smoke Ranch off Silver Creek Road near Lake Roosevelt. | | 70 | | Wild material | | 1497475 | W6 17265 |
| 25 | NA 65361 | 'Six Hills Giant' | Nepeta hybr. | | NA | | Not Available | 1994 | | | | | | | Cultivar | Full name as recorded at U.S. National Arboretum: Nepeta 'Six Hills Giant'. This accession had already multiplied well beyond three plants by 2003, and it is possible that seedlings acount for much of the increase; their degree of similarity to the original cultivar has not been assessed, but some variation is likely if the additional plants resulted from seed, and the accession may no longer strictly conform to 'Six Hills Giant'. -SBL | 2147533 | NA 65361 |
| 26 | W6 10102 | W6 10102 | Nepeta cataria L. | Kazakhstan | W6 | | | 1992 | COLLECTED | 07/23/1991 | Kok-Uzek. | | | | Wild material | | 1051622 | W6 10102 |
| 27 | Ames 9990 | Index Seminum No. 589 | Nepeta grandiflora M. Bieb. | South Moravia, Czech Republic | W6 | | | 1988 | DEVELOPED | PRE 10/05/1988 | | | | | Uncertain improvement status | | 1051215 | Ames 9990 |
| 28 | NSL 6419 | CATNIP | Nepeta cataria L. | Pennsylvania, United States | NLGRP | | Not Available | 1961 | DONATED | 1961 | | | | | | | 1036608 | NSL 6419 |