1Monthly Meeting: Addison GalambosMonthly Meeting: Addison Galambos7:00 PM PDT · Terra Linda Community Center, San RafaelTuesday 1 September 2026Monthly Meeting: Addison Galambos7:00 PM PDT · Terra Linda Community Center, San Rafael
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3Houston Orchid Society Monthly MeetingHouston Orchid Society Monthly Meeting7:30 PM CDT · First Christian Church, HoustonThursday 3 September 2026Houston Orchid Society Monthly Meeting7:30 PM CDT · First Christian Church, Houston
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5The NPSNJ Sussex Chapter invites you to a field trip and picnic at Kittatinny Valley State ParkThe NPSNJ Sussex Chapter invites you to a field trip and picnic at Kittatinny Valley State ParkAll daySaturday 5 September 2026The NPSNJ Sussex Chapter invites you to a field trip and picnic at Kittatinny Valley State ParkAll dayOOS Volunteer hours opportunity – Christmas lights check8:30 AM CDT · Will Rogers Gardens Exhibition Center, Oklahoma City
6Alamo Judging Center Monthly MeetingAlamo Judging Center Monthly Meeting12:30 PM CDT · Schertz Library, SchertzSunday 6 September 2026Alamo Judging Center Monthly Meeting12:30 PM CDT · Schertz Library, Schertz
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8Tucson Chapter MeetingTucson Chapter Meeting7:00 PM MST · The Environmental and Natural Resources Building, Room 225, University of Arizona, TucsonTuesday 8 September 2026Tucson Chapter Meeting7:00 PM MST · The Environmental and Natural Resources Building, Room 225, University of Arizona, TucsonPhoenix Chapter Meeting7:00 PM MST · via Zoom
9HOS General Membership MeetingHOS General Membership Meeting7:00 PM HST · Lanakila Elementary School Cafeteria, HonoluluWednesday 9 September 2026HOS General Membership Meeting7:00 PM HST · Lanakila Elementary School Cafeteria, Honolulu
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11September OSOGSL MeetingSeptember OSOGSL Meeting7:00 PM CDT · Commerce Bank Center for Science Education (CBEC) – Room 125, St. LouisFriday 11 September 2026September OSOGSL Meeting7:00 PM CDT · Commerce Bank Center for Science Education (CBEC) – Room 125, St. Louis
12Dallas Judging Center Monthly MeetingDallas Judging Center Monthly Meeting11:00 AM CDT · Garland Senior Activity Center, GarlandSaturday 12 September 2026Dallas Judging Center Monthly Meeting11:00 AM CDT · Garland Senior Activity Center, Garland
13September meeting – Society CookoutSeptember meeting – Society Cookout1:00 PM UTC · TBD, DennisSunday 13 September 2026September meeting – Society Cookout1:00 PM UTC · TBD, DennisSouth Coast C&SS monthly meeting -September 20262:00 PM PDT · Peninsula Center Library-Community Room, Rolling Hills Estates
19A Botanical Walk in Birch Grove ParkA Botanical Walk in Birch Grove Park9:30 AM EDT · Birch Grove Park, NorthfieldSaturday 19 September 2026A Botanical Walk in Birch Grove Park9:30 AM EDT · Birch Grove Park, NorthfieldHouston Judging Center Monthly Meeting10:30 AM CDT · First Christian Church, Houston
20OOS Meeting—September 2026OOS Meeting—September 20261:00 PM CDT · Will Rogers Gardens Exhibition Center, Oklahoma CitySunday 20 September 2026OOS Meeting—September 20261:00 PM CDT · Will Rogers Gardens Exhibition Center, Oklahoma City
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23Phoenix: Maricopa Native Seed Library Inventory RestockPhoenix: Maricopa Native Seed Library Inventory Restock12:00 PM MST · South Mountain Community Library, PhoenixWednesday 23 September 2026Phoenix: Maricopa Native Seed Library Inventory Restock12:00 PM MST · South Mountain Community Library, Phoenix
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26RHS Orchid Expert Group MeetingRHS Orchid Expert Group Meeting1:30 PM GMT+1 · The Hamworthy Club, Canford MagnaSaturday 26 September 2026RHS Orchid Expert Group Meeting1:30 PM GMT+1 · The Hamworthy Club, Canford MagnaLouisiana Judging Center Monthly Meeting11:00 AM CDT · Rapides Parish Library Westside, Alexandria
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28HOS Judging at Aiea Orchid Club MeetingHOS Judging at Aiea Orchid Club Meeting7:00 PM HST · Aiea Elementary School Cafeteria, AieaMonday 28 September 2026HOS Judging at Aiea Orchid Club Meeting7:00 PM HST · Aiea Elementary School Cafeteria, Aiea