Oncidium isopterum

Also known as: The Equal Winged Oncidium in the subfamily: Epidendroideae

Native to: Brazil

General Information

The Equal Winged Oncidium is a cool to warm growing epiphytic orchid belonging to the sub family Epidendroideae native to Brazil.

Plant Description

Grows to 10cm. Each new growth has numerous leathery rigid, lance shaped, oblong shaped leaves that grow to 1-7cm long. Pseudobulbs grow to 0.6-3cm

Flowers

Numerous blossoms appear during Winter

Blooming Season

• Winter

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 low elevations. Rainfall ranges from 3mm to 198mm per day, heaviest in June and lightest in January. Humidity ranges from 62% to 79%, highest in August and lowest in March. Temperature ranges from 11C to 31C, highest in March (18C to 31C) and lowest in January (11C 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,