Oncidium andradeanum

Also known as: Andrade's Oncidium in the subfamily: Epidendroideae

Native to: Ecuador

General Information

Andrade's Oncidium is a sympodial cool to warm growing epiphytic orchid belonging to the sub family Epidendroideae native to Ecuador. It is named after the Ecuadorian Discoverer of Species.

Plant Description

Sympodial. Grows to 25cm. Each new growth has numerous erect arching, lance shaped leaves that grow to 2.2-20cm long. Pseudobulbs grow to 3-5cm

Care Notes

These orchids have a fine root system that can quickly die back if left dry for too long, but also does not like to be kept wet, so water regularly but ensure that the mix is dry before watering. 

Climate

Grows at high elevations. Rainfall ranges from 3mm to 53mm per day, heaviest in October and lightest in March. Temperature ranges from 16C to 29C, highest in June (18C to 29C) and lowest in May (16C to 27C).

Watering

These orchids are sensitive to excessive watering and should only be watered when they look thirsty. Water infrequently and ensure that the roots are dry before watering. Keep an eye on them especially during hot weather as overwatering can lead to rot, whereas underwatering may result in wilting or shriveling, which while unattractive, will not kill the plant.

Potting

These plants are quite forgiving and will do well repotted ever 2-3 years. The mix should be coarse, well draining, and allow space for air to move and for roots to grow. 

Alternatively, these plants will also do well mounted to tree fern or cork slabs, or mounted to trees.

Best time for repotting or mounting the orchids is the end of winter when new growths start to appear. Avoid repotting during hot weather,