Group : Odontoglossum
Covers these genera : Ada (Ada.) , Adaglossum (Adgm.) , Banfieldara (Bnfd.) , Cochlioda (Cda.) , Cyrtochilum (Cyr.) , Neodryas (Nys.) , Odontioda (Oda.) , Odontobrassia (Odbrs.) , Odontoglossum (Odm.) , Odontonia (Odtna.) , Odontorettia (Odrta.) , Rehfieldara (Rfda.) , Rhynchostele (Rst.) , Vuylstekeara (Vuyl.)

General information for this group :
Most members of this group require very similar conditions. They are easy to grow and bloom when provided with the right environment. You can find some of the most interesting patterns and colors in the flowers of this group.


Subgroup : Odontoglossum

Covers these genera : Ada (Ada.) , Adaglossum (Adgm.) , Banfieldara (Bnfd.) , Cochlioda (Cda.) , Cyrtochilum (Cyr.) , Neodryas (Nys.) , Odontioda (Oda.) , Odontobrassia (Odbrs.) , Odontoglossum (Odm.) , Odontonia (Odtna.) , Odontorettia (Odrta.) , Rehfieldara (Rfda.) , Rhynchostele (Rst.) , Vuylstekeara (Vuyl.)

Description :
These plants are actually the cool-growing subgroup of the Oncidium Alliance. So, all information provided for Oncidium tends to also apply here. For convenience, we will simply echo the information here and make adjustments to it as needed. Many varieties of this group will bloom more than once per year, however spring is usually the peak flowering season.

Light :
Good light is most important when growth is maturing. If you are growing plants in a cooler temperature, then it is recommended to increase the light level. Usually a bright west or east window, or filtered south window is ideal. Towards the center of 4 foot fluorescents is also good for smaller plants, if you are growing under lights.

Temperature :
Cool to Intermediate conditions suit most varieties. If you are growing them under warmer conditions for short durations, then reduce the light level and increase humidity to compensate. If the warm spells are prolonged you will likely see signs of stress on the plants.

Water and Media :
Allow to dry for 1 day between waterings. One thorough watering per week is usually sufficient. Plants prefer to be underpotted. Good humidity will help to avoid pleating of the leaves. A high-quality sphagnum moss helps to attain this, and the fine roots of this group appreciate the extra moisture. Try not to let them dry out for extended periods, as the leaves will either pleat or start to go limp and leathery.

Fertilizing and Water Quality :
Use a balanced orchid fertilizer (3:1:3 or 4:1:4 ratio) at 1/4 to 1/2 strength, throughout the entire active growing period. If you are using good quality city water, then fertilize once per 3 weeks at the most, using 1/4 of the recommended strength on the label. If you use rainwater or distilled water, then this can be increased to once every 2 weeks at the most. Only fertilize during active growth periods to avoid burning the roots. Usually this is from February to September inclusive. Make sure to flush the pots every month at least, using distilled or rain water in copious amounts to remove any accumulated salts. Well-water must be diluted by at least half by adding distilled or rain water to limit damage caused by excessive minerals. Never use softened or bottled water.

Blooming :
As mentioned previously, many of these will bloom 2 or more times per year. Nothing special is required to initiate blooming, but it is helpful to ensure you are using the correct fertilizer. Usually the most impressive display of flowers is in late spring.

Our Plants :
The plants we sell from this group are usually in sphagnum moss, in 2.5 inch pots. Watering thoroughly once per week is adequate for cool to intermediate household temperature and humidity. This regimen suits the plant for about a year, at which point the plant will likely be at the edge of the pot. When repotting, you have the choice of upsizing to 3 inch pots with a sphagnum/perlite mix, or a fine bark mix. You should either pre-wet the mix you use, or thoroughly drench it after repotting.


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