Papilionanthe uniflora

Also known as: The Single Flowered Papilionanthe or Aerides longicornu in the subfamily: Epidendroideae

Native to: Bhutan Nepal

General Information

The Single Flowered Papilionanthe is a large monopodial cool to warm growing epiphytic or terrestrial orchid belonging to the sub family Epidendroideae native to Bhutan and Nepal.

Plant Description

Monopodial. Grows to 100cm. Each new growth has numerous terete shaped leaves that grow to 0.1-16cm long. The plant forms pendant or arching growths

Substrate(s)

• Coarse
• Bark
• 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 high elevations. Rainfall ranges from 8mm to 798mm per day, heaviest in July and lightest in December. Humidity ranges from 73% to 95%, highest in July and lowest in March. Temperature ranges from 4C to 21C, highest in July (17C to 21C) and lowest in January (4C to 11C).

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.

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.

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 can be sensitive to repotting though should not require repotting regularly. Repotting should be done when the mix has broken down to the point that it doesn't absorb water or holds onto water for far too long, usually the plant shows a decline in growth as well. Repotting is best done after the growing season when the plant has died back.

The mix should be free draining, with a blend of 30% inorganic ingredients such as coarse sand, gravel or perlite, mixed in with about 70% organic ingredients such as peat, leaf litter or decomposed bark. Avoid commercial potting mixes as they can vary wildly and may contain "wetting agents" that can hold onto water for loo long, causing rotting and stunted growth.

 

This plant does very well in baskets or suspended pots