2026
| 2026-1 | Donna Ballard Dendrobium phalaenopsis |
| 2026-2 | Jack Zhu “Mastering the New Year Orchid: A Californian’s Guide to Cymbidium sinense.” |
| 2026-3 | Merle Robboy “Member Show-and-Tell” |
| 2026-4 | James Livingston “The Flask” |
| 2026-5 | Mitchell Schneider Oncidiinae |
| 2026-6 | Dean Shoffeitt “My Visit to the 2026 World Orchid Conference in Dresden, Germany” |
| 2027-7 | Annual Installation & Awards Banquet At the home of Michael Miranda |
| 2026-8 | |
| 2026-9 | |
| 2026-10 | |
| 2026-11 | |
| 2026-12 | Annual Holiday Party |
2025
| 2025-01-January-1 | Donna Ballard “Dendrobium phalaenopsis, Australia’s Other Dendrobium” |
| 2025-02-February | Auction |
| 2025-03-March-2 | Mitchell Schneider “Journey into Wonderland Inter-generic Zygos” |
| 2025-04-April-2 | Peter T. Lin “2009 Japan Grand Prix International Orchid Festival” |
| 2025-05-May | Brandon Tam “Paphiopedilum Culture According to the Huntington” |
| 2025-06-June-1 | Fred Clarke “Catasetum Species and their Cultivation” |
| 2025-07-July-1 | Annual Installation & Awards Banquet At the home of Michael Miranda |
| 2025-08-August-1 | Carol Beule “The Small Paphs” |
| 2025-09-September-1 | Tim Culbertson “Holocoglossums: The Next Great Thing in Vandas” |
| 2025-10-October-1 | Peter Lin “Epidendrum, Prostechea, Encyclia” |
| 2025-11 | Nico Goossens “Phalaenopsis and Their Culture” |
| 2025-12 | Annual Holiday Party |
2024
| 2024-01-January | Jack Zhu “The Form and Color of Asian Cymbidiums” |
| 2024-02-February | Carol Beule “Sarcochilus” |
| 2024-03-March | Auction |
| 2024-04-April | Donna Ballard “The Difference between Seedlings, Meristem Clones and Stem Propagated Orchids.” |
| 2024-05-May | Jose Carlos Lopez “The Hidden Life of Catasetinae” |
| 2024-06-June | Fred Clarke “Venezuela’s National Flower, Cattleya mossiae” |
| 2024-07-July | Annual Installation & Awards Banquet At the home of Michael Miranda |
| 2024-08-August | Peter T. Lin – Diamond Orchids “Dendrobiums and their Culture” |
| 2024-098-September | Tim Culbertson “Lycaste Breeding, Culture, and Growing” |
| 2024-10-October | Jack Zhu “The Leaf Variegation of Asian Cymbidiums” |
| 2024-11-November | Arthur Pinkers “Photography Concepts” |
| 2024-12-December | Annual Holiday Party |
2023
| 2023-01-January | Peter Lin “Spectacular Orchids: a Portrait of the Most Beautiful and Spectacular Orchids from around the World” |
| 2023-02-February | Jack Zhu “Cymbidium Influences in the Asian Culture” |
| 2023-03-March | Roberta Fox “A Walk of the Wild Side…” |
| 2023-04-April | Tim Cultbertson “Sarcochilus: Gems of Spring” |
| 2023-05-May | Scott McGregor Blue orchid |
| 2023-06-June | Jose Carlos Lopez “Habenarias & Pecteilis Orchids” |
| 2023-07-July | Annual Installation & Awards Banquet At the home of Michael Miranda |
| 2023-08-August | Fred Clarke Sunset Valley Orchids “Aussie Native Dendrobiums and their Cultivation” 18-20 August NHOS Summer Exotic Plant and Orchid Festival |
| 2023-09-September | Brandon Tam “Culture on Growing Large Slipper Orchids and Other Specimens” |
| 2023-10-October | Peter Lin “12 Months of Orchids: Building a Collection with Blooms Every Month of the Year” |
| 2023-11-November | Merle Robboy “A Sensate Visit to Guatemala” |
| 2023-12-December | Annual Holiday Party |
2022
| 2022-1 | Steve Frowine “Growing Orchids Without a Greenhouse” |
| 2022-2 | Arthur Pinkers “AOS Judging” |
| 2022-3 | Douglas Overstreet “Ten Favorite Oncidiums, Some of Which Are Still Oncidiums” |
| 2022-4 | Carol Siegel “The Sex Life of Orchids” |
| 2022-5 | Scott McGregor “Growing Orchids in the Southern California Coastal Climate |
| 2022-6 | Annual Installation & Awards Banquet At the home of Michael Miranda |
| 2022-7 | Jose Carlos Lopez “The Four Seasons of Cattleyas” |
| 2022-8 | Fred Clarke “Becoming an 80 Percentile Grower” |
| 2022-9 | Ron Kaufmann “Life on the Rocks: The World of Rupicolous Orchids” |
| 2022-10 | Donna Ballard “Growing Orchids in the Middle of a Drought” |
| 2022-11 | Brandon Tam “Growing Stanhopeas Outdoors in Southern California” |
| 2022-12 | Annual Holiday Party |
2021
| 2021-1 | Arthur Pinkers Laelia anceps and its Hybrids |
| 2021-2 | Ron Parsons “Orchids of Southeastern Australia” |
| 2021-3 | Brandon Tam “Growing Stanhopeas Outdoors in Southern California” |
| 2021-4 | Carol Siegel “Orchids in Extreme Environments |
| 2021-5 | Tom Mirenda “Tom’s African Adventure” |
| 2021-6 | Bas van Eijk How to Care for Your Phalaenopsis |
| 2021-7 | Annual Installation & Awards Banquet At the home of Michael Miranda |
| 2021-8 | David Toyoshima Cattleyas |
| 2021-9 | Tim Culbertson Lycaste breeding |
| 2021-10 | Ron Kaufmann “Cattleya eldorado: Searching for Gold in the Brazilian Amazon” |
| 2021-11 | Mary Gerritsen “Papua New Guinea: A Wonderland of Orchids, Birds and Cultures” |
| 2021-12 | Annual Holiday Party |
2020
| 2020-1 | Roberta Fox “Take a trip on the Rio Negro in Brazil” |
| 2020-2 | Annual auction |
| 2020-3 | Scott McGregor “In Search of Blue” |
| 2020-4 | NHOS Summer Exotic Plant and Orchid Festival – On Hold |
| 2020-5 | – |
| 2020-6 | – |
| 2020-7 | Annual Installation & Awards Banquet At the home of Michael Miranda |
| 2020-8 | Scott McGregor |
| 2020-10 | Peter T. Lin Spectacular Orchids: A Portrait of the Most Beautiful and Spectacular Orchids from Around the World. |
| 2020-11 | Fred Clarke Becoming an 80 Percentile Grower |
| 2020-12 | Annual Holiday Party |
2019
| 2019-1 | Tom Mirenda |
| 2019-2 | Tim Culbertson “Encyclias of Mexico and Beyond” |
| 2019-3 | Peter Lin |
| 2019-4 | Steve Hampson “Wild Orchids in China” |
| 2019-5 | Harold Koopowitz “Perfecting the Miniature Slipper Orchids” |
| 2019-6 | Douglas Overstreet “Things My Elders Taught Me” |
| 2019-7 | Annual Installation & Awards Banquet At the home of Michael Miranda |
| 2019-9 | Paul Tuskes “Schomburgkia, Laelia, and Myrmecophila, What Happened to Them?” |
| 2019-10 | Russ Nichols “How I Built My (Way Too Fancy) Greenhouse” |
| 2019-11 | |
| 2019-12 | Annual Holiday Party |
2018
| 2018-01 | Nancy Benay “An Introduction to the Native Orchids of France” |
| 2018-02 | Westminster Mall NHOS Expo: “Romancing the Orchid” |
| 2018-03 | Winn Winmaw “Orchids of the Shan Plateau, Part II” |
| 2018-04 | Winn Winmaw “Orchids of the Shan Plateau, Part II” |
| 2018-05 | Scott McGregor “Australian and European Terrestrial Orchids” |
| 2018-06 | Peter Linn |
| 2018-07 | Annual Installation & Awards Banquet At the home of Michael Miranda |
| 2018-08 | NHOS Summer Exotic Plant & Orchid Festival August 17-19, 2018 Rick Wells “Orchid mounting” |
| 2018-09 | Brandon Tam |
| 2018-10 | Ron Parsons Photos |
| 2018-11 | Peter Tobias ”Orchids in the Wild in Colombia and Brazil” |
| 2018-12 | Annual Holiday Party – 2018 Holiday Potluck |
2017
| 2017-1 | Sophie Miller Cypripedium montanum |
| 2017-2 | Question and Answer session |
| 2017-3 | Dr. Peter Tobias “How to Create Your Own Orchid Reserve” |
| 2017-4 | Harold Koopowitz “New Trends in Modern Complex Slipper Orchid Hybrids” |
| 2017-5 | Tim Culbertson “Beautiful Miniature Vandaceous Orchids for Outdoors” |
| 2017-6 | Peter Lin “12 months of Orchids” |
| 2017-7 | Annual Installation & Awards Banquet At the home of Michael Miranda |
| 2017-8 | David Toyoshima |
| 2017-9 | Ron Kaufman “South American Slipper Orchids: Habitats and Conservation” |
| 2017-10 | Gustavo Aguirre Colombian cattleyas |
| 2017-11 | Carol Beule “The genus Lycaste” |
| 2017-12 | NHOS 2017 Holiday Potluck |
2016
| 2016-1 | Orchid Gift Exchange! Fred Clarke “Catasetum Species, Hybrids and their Culture” |
| 2016-2 | The Many Faces of Orchids – NHOS 2016 Orchid Expo |
| 2016-3 | Ken Cameron “Vanilla Orchids” |
| 2016-4 | Ron Kaufmann “Orchids of Tropical America” |
| 2016-5 | Ron Parsons “Orchid Hunting on the Island of Rhodes” |
| 2016-6 | George Hatfield |
| 2016-7 | Annual Installation & Awards Banquet At the home of Michael Miranda |
| 2016-8 | Carol Buele “The Genus Sarcochilus, Its Charm and Ease of Growth” |
| 2016-9 | Linden Burzell “Cattleya trianae: The Jewel of the Rio Magdalena” |
| 2016-10 | Steve Champlain “An Overview of Brazilian Cattleyas & Laelias″ |
| 2016-11 | Dennis Olivas Cool to Hot Species |
| 2016-12 | Annual Holiday Party |
2015
| 2015-1 | Dr. Mary Gerritsen “Borneo, Land Beneath the Wind” |
| 2015-2 | AUCTION |
| 2015-3 | Jim Cootes “The Orchids of the ‘Philippines” |
| 2015-4 | Dennis Olivas “Diseases and Pests” |
| 2015-5 | Janet Lamborn “Don’t Put On the Virus Blinders, Your Collection Is Depending On You” |
| 2015-6 | Francisco Miranda “Brazilian Cattleya Species” |
| 2015-7 | Annual Installation & Awards Banquet At the home of Michael Miranda |
| 2015-8 | Phyllis Prestia “Orchid Discovery: Madagascar and the WOC Johannesburg” |
| 2015-10 | Alfredo Manrique “Growing Orchids of the Andes Range” |
| 2015-11 | Peter T. Lin “Wild, Weird, & Wonderful Orchids: A Portrait of Oddities in the Orchid World” |
| 2015-12 | Annual Holiday Party |
2014
| 2014-1 | Fred Clarke “The Evolution of Spotted Cattleyas” |
| 2014-2 | Auction |
| 2014-3 | Winn Winmaw “Orchid’s of the Shan Plateau” |
| 2014-4 | Gene Crocker “Unusual Orchids I Have Known” |
| 2014-5 | Wayne Ferrell “Cool Tolerant Vandaceous Orchids” |
| 2014-6 | Phyllis S. Prestia “Catasetum” |
| 2014-7 | Annual Installation & Awards Banquet At the home of Michael Miranda |
| 2014-8 | Alan Koch “Brazilian Cattleyas ” |
| 2014-9 | Dennis Olivas “Diseases and Pests” |
| 2014-10 | Samantha & Terry Root “Phragmipedium Species and Hybrids Bred by the Orchid Zone” |
| 2014-11 | Brenda Oviatt “Angraecoid Orchids: Keeping a Piece of Nature Alive” |
| 2014-12 | Annual Holiday Party |
2013
| 2013-1 | Theresa Hills: “Miltoniopsis” |
| 2013-2 | Memorial Orchid Auction |
| 2013-3 | Ron Kaufmann “Life on the Rocks: the World of Rupicolous Orchids” |
| 2013-4 | Greg Allikas “Orchid Photography for the Digital Age” |
| 2013-5 | Fred Clarke “Aussie Native Dendrobiums and their Cultivation” |
| 2013-6 | Glen Decker “Phragmipediums and their Hybrids” |
| 2013-7 | Annual Installation & Awards Banquet At the home of Michael Miranda |
| 2013-8 | Tom Mirenda “Orchid Hunting to Central America” |
| 2013-9 | Roy Tokunaga “Dendrobiums and their Culture” |
| 2013-10 | George Hatfield “Don’t Forget Your Roots, Cymbidium Species!” |
| 2013-11 | Arnold Gum “Multi-Floral Paphiopedilums” |
| 2013-12 | Annual Holiday Party |
2012
| 2012-1 | Dr. Holger Perner “Come with Me to Western China to See Fascinating Orchids.” |
| 2012-2 | Memorial Auction News |
| 2012-3 | Ron McHatton “Orchids and Bugs” |
| 2012-4 | The Roving Orchid Reporter Visits the Orchids of Queensland, Australia |
| 2012-5 | Dr. Ron Kaufman “Searching for Orchids in Colombia” |
| 2012-6 | Nico Goossens “Singapore Orchid Show” |
| 2012-7 | Annual Installation & Awards Banquet At the home of Michael Miranda |
| 2012-8 | Peter Lin “Neofinetia falcata & Its Hybrids” |
| 2012-9 | George Hatfield “The Effects of Cymbidium Species on their Hybrids” |
| 2012-10 | Paul Tuskes “Landscaping with Orchids” |
| 2012-11 | Samantha Kha and Terry Root “An Evening at the Orchid Zone” |
| 2012-12 | Annual Holiday Party Sandra Tillisch Svoboda “The President Is Coming!” |
2011
| Annual Installation & Awards Banquet At the home of Michael Miranda | |
| Annual Holiday Party |
2010
| 2010-1 | Fred Clarke “On Bulbophyllums” |
| 2010-2 | Memorial Auction Oceans of Orchids Show |
| 2010-3 | Harold Koopowitz “Creating the New Miniature Slipper Orchids” |
| 2010-4 | Tom Biggart “The Culture of Rupiculous Laelias of Brazil” |
| 2010-5 | Loren Batchman “Orchid Pests” |
| 2010-6 | Dr. Paul Tuskes “The Genus Encyclia and Its Close Relatives” |
| 2010-7 | Annual Installation & Awards Banquet At the home of Michael Miranda |
| 2010-8 | Karen Muir “What Makes a Good Paph” |
| 2010-9-10 | George Hatfield “18th Australian National Orchid Show in Melbourne Australia 2009” |
| 2010-11 | Peter Lin “The Three A’s of the Orchid World: Angraecum, Aerangis & Aeranthes” |
| 2010-12 | Annual Holiday Party |
2009
| 2009-1 | Fred Clarke “Venezuela’s National Flower, Cattleya mossiae” |
| 2009-2 | Ron McHatton “Madagascar: Why It’s So Special” |
| 2009-3 | Holger Perner “Dendrobiums of China” |
| 2009-4 | Christopher Croom “Sex and Ice Cream: Medicinal and Edible Orchids” |
| 2009-5 | Memorial Auction |
| 2009-6 | James Rose “Lycaste skinneri and Its Hybrids |
| 2009-7 | Annual Installation & Awards Banquet At the home of Michael Miranda |
| 2009-8 | Norito Hasegawa “Phalaenopsis Species and Their Influence on Hybrids” |
| 2009-9 | George Hatfield “Orchid Growing in Holland” |
| 2009-10 | Bryce Augustine “Deflasking Paphs” |
| 2009-11 | Peter Lin “Mini-Catts: Delightful Cattleyas in Miniature” |
| 2009-12 | Annual Holiday Party |
2008
| 2008-1 | Harold Koopowitz “Searching for Phragimepedium kovachii in Peru.” |
| 2008-2 | Karen Muir “The New Generation Brachypetalums and Their Hybrids” |
| 2008-3 | Bill Thoms “Bulbophyllum Culture — The WAFL-HS Program” |
| 2008-4 | Weyman Bussey “50 Showy Mexican Species, Where They Come from and How They Grow” |
| 2008-5 | Auction |
| 2008-6 | Marilyn Levy “I Never Met an Orchid I Didn’t Want to Grow” |
| 2008-7 | Annual Installation & Awards Banquet At the home of Michael Miranda |
| 2008-8 | Alan Koch “Understanding the Brazilian Cattleya Alliance and How to Grow Them” |
| 2008-9 | Winn Winmaw “The Orchids of Mount Popa” |
| 2008-10 | George Hatfield “Orchid Nutrition” |
| 2008-11 | Ron Parsons “Rarities and Oddities (Rare and Unusual Orchid species)” |
| 2008-12 | Annual Holiday Party |