Spiranthes cernua

Also known as: The Nodding Spiranthes or Spiranthes annua Spiranthes cernua var. ochroleuca Spiranthes petiolaris Triorchis cernuus Spiranthes constricta Spiranthes parksii Spiranthes cernua h.f. odorata Gyrostachys constricta Ibidium cernuum Limodorum autumnale The Nodding Ladies Tresses in the subfamily: Spiranthoideae

Native to: Alabama - United States Canada Florida - United States Illinois - United States Kansas - United States Kentucky - United States Nebraska - United States New York - United States Ohio - United States Oklahoma - United States

General Information

The Nodding Spiranthes is a cold to warm growing orchid belonging to the sub family Spiranthoideae native to United States and Canada.

Plant Description

Grows to 50cm. Each new growth has numerous lance shaped leaves that grow to 0.5-20cm long. Pseudobulbs grow to 50cm

Substrate(s)

• Perlite
• Sand

Climate

These orchids grow in cool climates, at low altitudes, in cool plains, forests or coastal scrub.

They are forgiving of humidity variances as long as temperatures are kept on the cool side. They can do well outdoors in the garden in cool and temperate areas, though it is important that they are protected from warm dry winds. They can enjoy morning sun especially in winter but will need protection from the hot sun in the afternoon and during summer. With some acclimatisation they may be able to receive more sun.

 

Grows at low elevations. Rainfall ranges from 25mm to 112mm per day, heaviest in June and lightest in January. Humidity ranges from 60% to 77%, highest in December and lowest in May. Temperature ranges from -14C to 28C, highest in July (17C to 28C) and lowest in January (-14C to -6C).

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.