Exhibiting Rules for Ribbon Judging

Your plants are needed to enable the society to present the maximum floriferous display for the public’s viewing. Members are urged to enter all their blooming plants in the exhibit regardless whether the plants are eligible or not for ribbons—as determined by the following rules:















Judging: Schedule of Classes


A.  Cattleya Alliance 

  1. Brassavola, Cattleya, Guarianthe, Laelia, Rhycholaelia and Sophronitis species.
  2. Hybrids - white or white with semi-alba lip of species in A1
  3. Hybrids – pink, lavender, purple, and blue
  4. Hybrids - green and yellow
  5. Hybrids - red, orange, salmon and brown Splash petal or peloric species or hybrid
  6. All other Cattleya Alliance species - Barkeria, Broughtonia, Epidendrum, Encyclia, Myrmecophila, etc.
  7. Hybrids - using genera from A1 with A6 or A7 such as Cattleytonia, Epicat, Dialaelia, etc.
  8. First bloom seedling


B.  Standard Cymbidium - flowers with a natural spread of 3.5 inches or more

  1. Species
  2. Hybrids - white, blush, cream, pink, rose and "feathered"
  3. Hybrids - yellow, orange and green
  4. Hybrids - red, bronze and brown
  5. Hybrids - stripes, spots and peloric patterns
  6. First bloom seedling


C. Intermediate Cymbidiums - flowers with a natural spread of less than 3.5 inches in the largest flower

  1. Species
  2. Hybrids - white, blush, cream, pink, rose, and "feathered"
  3. Hybrids - yellow, orange and green
  4. Hybrids - red, bronze and brown
  5. Hybrids - stripes, spots and peloric patterns
  6. Chinese and miniature species and hybrids (less than 1.25 inches and all colors)
  7. All other Cymbidium alliance species and hybrids - Ansellia, Bifrenaria, Maxillaria, Catasetum, Eulophiella, Grammatophylulum, Phaius, plus any crossed with a cymbidium.
  8. First bloom seedling 


D.  Dendrobium

  1. Phalaenopsis type - species and hybrids
  2. Eugenanthe ( nobili type) - species and hybrids
  3. All other sections - Calista, Dendrocoryne, Nigrohirsutae, Oxyglossum, Spatulata, and Latouria, Austrailian.
  4. Other species and hybrids - Dockrilla, Flickingeria
  5. First bloom seedling


E.  Oncidium/odontoglossum Alliance

  1. Oncidium species and hybrids
  2. Odontoglossum species and hybrids
  3. All other genera (Ada, Cochlioda, Brassia, Galeandra, Gomesa, Miltonia, Miltoniopsis, Rodriguezia) species and hybrids
  4. Hybrids of E1, E2 and E3,i.e., Odontocidium, Brassisium, Colmanara, Vuylstekeara,
  5. Burrageara, Miltassia, Wilsonara, etc.
  6. First bloom seedling 


F.  Cypripedium Alliance

  1. Paphiopedilum, Parvisepalum group (Armeniacum, Delenatii, Emersonii, Malipoense, Micranthum) species and hybrids
  2. Paphiopedilums - all other species
  3. Phragmipedium, Cypripedium, Selenipedium and Mexipedium hybrids
  4. Phragmipedium, Cypripedium, Selenipedium and Mexipedium species
  5. Paph. hybrids - vinicolor
  6. Paph. hybrids - yellow, green, tan
  7. Paph. hybrids - red, brown, mahogany
  8. Paph. hybrids - white, cream, pink
  9. First bloom seedling


G.  Phalaenopsis/Vanda Alliance

  1. Phalaenopsis, Doritis, Kingiella - species
  2. Hybrids - white with white or colored lip
  3. Hybrids - pink, lavender purple and blue
  4. Hybrids - green, yellow, red and art shades
  5. Hybrids - striped, spotted
  6. Hybrids - peloric forms
  7. Vanda, Ascocentrum - species
  8. Hybrids - Ascocenda
  9. Species - all other Vandaceous genera Aerides, Rhynchostylis, Renanthera, Neofinetia, Sarcochilus
  10. Hybrids - all other Vandaceous genera
  11. Hybrids - G1 X G7 or G9
  12. First bloom seedling


H.  Miscellaneous Genera

  1. Masdevallia, Dracula, Porroglossum etc. species and hybrids
  2. Angraecoids - species and hybrids and Aerangis
  3. Lycaste, Anguloa Maxillaria species and hybrids
  4. Zygopetalum group - species and hybrids (excluding H3)
  5. Hybrids - H3 and H4
  6. Bulbophyllum, Cirrhopetalum, Dendrochilum - species and hybrids
  7. Coelogyne, Pleione - species and hybrids
  8. Stanhopea, Gongora, Coryanthes, Stenia, etc. - species and hybrids
  9. Terrestrials - Disa., Calanthe, Epipactis, Habenaria, etc. species and hybrids
  10. Species and hybrids not found elsewhere
  11. First bloom seedling 


I.  Orchids Grown for Foliage


J.  Ineligible Plants (Honorable Mention)



The Napa Valley Orchid Society will host in April a Potting Party.  More information on this event can be found here.  


If you enjoy the splendor of orchids - consider becoming a member of the Napa Valley Orchid Society for only $20.00 per year and celebrate orchids with other admirers all year long!  Information on the society can be found here. No experience necessary!


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