Renanthera imschootiana

Also known as: Imschoot's Renanthera or Renanthera papilio in the subfamily: Epidendroideae

Native to: Manipur - India

General Information

Imschoot's Renanthera is a large monopodial warm to hot growing epiphytic orchid belonging to the sub family Epidendroideae native to India. It is named after the Belgian Orchid Enthusiast in the 19th century.

Plant Description

Monopodial. Grows to 90cm. Each new growth has numerous thick rigid, oblong shaped leaves that grow to 1.8-10cm long

Substrate(s)

• Coarse
• Charcoal

Care Notes

These orchids like to be kept on the dry side, but may need to be watered daily during warm weather, and prefer a well draining mix or also do well mounted, provided they can be watered regularly.

These are quite a forgiving orchid, there are no special requirements to get this orchid to flower, just good care and consistent conditions. Larger plants may be more fussy and can react poorly to change; a poorly timed repotting, a pest infection or an unusually hot day can set them back for a couple of years. However, even plants that have been treated poorly can thrive, and if they are set back they often recover much stronger then they would otherwise be.

Climate

Grows at low to high elevations. Rainfall ranges from 10mm to 175mm per day, heaviest in June and lightest in January. Temperature ranges from 2C to 26C, highest in June (19C to 26C) and lowest in January (2C to 19C).

Fertiliser

Apply liquid based fertiliser per recommended directions. They can benefit from a high phosphate fertiliser leading up to flowering season, followed by a high nitrogen fertiliser when new growth appears, and a balanced fertiliser in other times. These orchids can also tolerate slow release fertiliser applied 1-2 pellets per cup (250ml) of media.

Use balanced fertiliser during Spring and Summer. Apply fertiliser regularly at half strength year round. Use a high Nitrogen fertiliser during Spring and Summer. Use a high Phosphorous fertiliser during Summer.

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,

Repotting is best done annually.