Oncidium harrisonianum

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

Native to: Brazil

General Information

Harrison's Oncidium is a small sympodial cool to warm growing epiphytic or lithophytic orchid belonging to the sub family Epidendroideae native to Brazil. It is named after the English Orchid Enthusisast in Brazil around 1830's.

Plant Description

Sympodial. Grows to 7.5-17.5cm. Each new growth has a single leathery thick, rigid leaf that grows to 1.5-15cm long. Pseudobulbs grow to 1.7-2.5cm

Flowers

Numerous long lasting blossoms appear during Summer and Spring

Blooming Season

• Spring
• Summer

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 to high elevations. Rainfall ranges from 28mm to 201mm per day, heaviest in June and lightest in February. Humidity ranges from 80% to 84%, highest in September and lowest in January. Temperature ranges from 9C to 26C, highest in July (16C to 26C) and lowest in January (9C to 20C).

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,