NARGS supports over 30 regional chapters across North America, each offering local gatherings like lectures, plant sales, garden visits, field trips, and demonstrations. These chapters nurture community connections, share specialized knowledge, and provide access to unique plants and practical growing advice tailored to different climates and environments
| Logo | Title | Location | State/Province |
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Adirondack Chapter | Ithaca | New York |
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Alaska Chapter | Anchorage and the Mat-Su Valley | Alaska |
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Allegheny Chapter | Pittsburgh | Pennsylvania |
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Berkshire Chapter | West Stockbridge | Massachusetts |
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Calgary Rock & Alpine Garden Society (CRAGS) | Calgary | Alberta |
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Columbia-Willamette | Portland | Oregon |
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Delaware Valley Chapter | Philadelphia | Pennsylvania |
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Fells Chapter | Newbury | New Hampshire |
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Gateway Chapter | St. Louis | Missouri |
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Great Lakes Chapter | Ann Arbor | Southern Michigan |
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Hudson Valley Chapter | Westchester County | New York |
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Long Island Chapter | Oyster Bay | New York |
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Manhattan Chapter | New York | New York |
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Mason Dixon Chapter | Norrisville | Maryland |
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Minnesota Chapter | Minneapolis/St. Paul | Minnesota |
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New England Chapter | Boston area | Massachusetts |
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New Mexico Chapter | Santa Fe/Albuquerque | New Mexico |
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Newfoundland Chapter | St Johns | Newfoundland |
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Northwestern Chapter | Seattle | Washington |
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Nova Scotia Chapter | Bedford | Nova Scotia |
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Ohio Valley Chapter | Ohio | |
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Ontario Rock Garden & Hardy Plant Society | Don Mills | Ontario |
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Ottawa Valley Rock Garden & Horticultural Society | Ottawa | Ontario |
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Painted Hills Chapter | John Day | Oregon |
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Piedmont Chapter | Chapel Hill, Durham, and Raleigh | North Carolina |
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Potomac Valley Chapter | Washington DC, Maryland, & Virginia | |
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Quebec Alpine & Rock Garden Society | Montréal | Quebec |
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Rocky Mountain Chapter | Denver | Colorado |
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Sierra Chapter | Sonora | California |
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Siskiyou Chapter | Medford | Oregon |
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Wasatch Chapter | Salt Lake City | Utah |
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Watnong Chapter | Morristown | New Jersey |
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Western Chapter | San Francisco Bay area | California |
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Wisconsin-Illinois Chapter | Madison-Chicago | Wisconsin Illinois |