Oncidium

Oncidium (on-SID-ee-um)

This large family of orchids has varied growing needs. Many come in yellows, browns, and pinks.

All need bright light, but some may need full sun.
Some need intermediate temperatures, while others need to be kept warmer. Tolumnias, Oncidium relatives from the Caribbean, need warm temperatures.
Typically, Oncidiums with thin leaves need frequent water. Those with thick leaves or pseudobulbs can dry out between waterings, and need a winter dormancy.
Repot every 2-3 years.

Oncidium Family

Oncidiums can be crossbred with closely related orchids to create hybrids. Hybrid plants combine the best qualities of both parents, and some can survive poor growing conditions or neglect. This "hybrid durability" makes them great choices for beginning orchid growers. Oncidium hybrids include:

Beallara

Brassia x Cochlioda x Miltonia x Odontoglossum, abbreviated Bllra.

Colmanara

Miltonia x Odontoglossum x Oncidium, abbreviated Colm.

Maclellanara

Brassia x Odontoglossum x Oncidium, abbreviated Mclna.

Odontioda

Cochlioda x Odontoglossum, abbreviated Oda.

Odontocidium

Odontoglossum x Oncidium, abbreviated Odcdm.

Odontonia

Odontoglossum x Miltonia, abbreviated Odtna.