Calendar of Events

Monthly DOS Meeting

Lowry CenterDATE: Tuesday, February 10, 2020 7:00 P.M.
LOCATION: Lowry Conference Center
1061 Akron Way, Bldg. 697
Room 200B
Denver, CO 80230
Map >

The program for February will be presented by Dave Haelterman. Dave is a Belgian agronomist, environmental advisor, and orchid aficionado. He has been a small at-home grower for more than 25 years. As an exclusive grower of botanical orchids, he mostly specializes in growing genera such as Maxillaria, Mormodes, Cycnoches, Stanhopea, Gongora and other Stanhopeinae, also Cattleya, Odontoglossum and Rhynchostele (former Mexican Odontoglossum), Phragmipedium, Laelia (from Mexico), Sophronitis, Pescatoria, Huntleya, Masdevallia, among others. He is also an orchid photographer with 23 years’ experience, emphasizing in situ studies in Belgium, Mexico, Guatemala, Honduras, Costa Rica, Venezuela, Ecuador and Colombia. He’s given many lectures on orchids in the wild and on orchid cultivation for orchid societies in Belgium, Venezuela and in Colombia. A passionate conservationist, he tries to find ways to protect orchids in and ex situ.

Visitors are welcome to participate at regular meetings.

The Lowry Conference Center is located centrally in Denver at the corner of Yosemite Street and Akron Way. It has convenient free parking with direct access to the ground floor meeting room and free WiFi.

Meeting General Information
The Denver Orchid Society meets on the 2nd Tuesday of every month, with the exception of a summer break in July and August. Visitors are always welcome! Our meetings include a short business discussion, an informal Show-and-Tell, an expert speaker orchid presentation, and the sale of orchid plants.
2020 Meeting Schedule
  • January 13 — Mark Van Der Woerd
  • February 10 — Dave Haelterman
  • March 9 — Plant Study and Grow Competition
  • April 13 — LED Lighting Presentation
  • May 11 — Ron Parsons-Miniature Orchids
  • June 8 — NO MEETING; Lowry Construction
  • July — NO MEETING-Summer Break
  • August — Summer Event & BBQ/Pot Luck
  • September 14 — Daryl – Tezula Orchids
  • October 12 — Graham – Lehua Orchids
  • November 19 — Member Grow Space Presentations
  • December  — Pot Luck/Auction


The DOS Spring Show this year will be held at the Denver Botanic Gardens.  The theme “High On Orchids” will be March 14-15. Sat. 10-5, Sun. 10-4, 2020.

 Pictures from our Last Spring Show

 Rocky Mountain Judging Center Monthly Sessions

Phragmapedium2019 RMJC Schedule
General Information

Judging sessions are open to all orchid growers and are held on the 2nd Saturday of each month at the Colorado Federation-Garden Clubs building, 1556 Emerson Street in Denver. Off-street parking is available. Centrally located just north of Colfax, this location is close to Denver Botanic Gardens. Everyone is welcome, so try to attend at least once. Bring your best plants and stay a while. It is a great educational experience.
Map >

Typical Session

6:00 p.m. – Judges training
6:30 p.m. – Plant registration
7:00 p.m. – Judging begins (except during the DOS annual show in which case judging starts the morning before the show opens to the public.)