Bulb Species are located. The climate is temperate, subhumid, with rainfall in the summer. Precipitation in the driest month is below 40 mm. The dry season has spells of precipitation, sometimes extending for three days. The wet season presents frequent spells of hot weather, lasting from two to three weeks.
Rainfall is usually brief and intense.
Evaporation rate exceeds precipitation almost three times, resulting in rapid development of soil water deficit due to sandy volcanic soils. The first group of wild S. cinnabarina was found in partial shade accompanied by pasture plants, under Eucalyptus trees. The dry remains of grasses were burned yearly, leaving ashes and unburned remains, an old system of agriculture in Mexico, still commonly used by farmers and gardeners. The third group, forming part of the collection in the Germplasm Bank, was situated in the same area, in beds, in the open field, in sandy, volcanic soil containing some added organic matter. Spiranthes cinnabarina is an herbaceous, perennial plant that is adapted to a range of soil physical conditions.