About this Event
The National Capital Orchid Society is thrilled to host that the NCOS International Show and Sale, the largest orchid show and sale in the Northeast and Mid-Atlantic. The Show has a new home for 2026 at the Montgomery County Fairgrounds, Building 6 in Gaithersburg, Maryland.
From September 18–20, 2026, orchid lovers are invited to experience a show which promises to be bigger and better than ever, with 5,000 square feet of exhibits and vendors with an unparalleled selection of orchids for every level of grower.
This year’s international vendor lineup showcases an extraordinary range of orchids and tropical plants, with committed vendors traveling from across the United States, Ecuador, Brazil, Taiwan, Canada, and Thailand.
Collectors can look forward to rare species, new hybrids, and show-quality plants and supplies, along with a full weekend of orchid excitement under one roof!
Event venue & nearby stays
Montgomery County Fair - Main Office, 16 Chestnut Street, Gaithersburg, United States
Concerts, fests, parties, meetups — all the happenings, one place.