The key to growing Tolumnias is understanding their natural habitat. The species are from the Caribbean. Most of the species involved in modern hybrids are found in intermediate to warm conditions growing on twigs where they are exposed to bright light and air movement. Moisture is provided by high humidity and by daily rain showers or heavy dews. Due to constant air movement by the trade winds, plants never remain wet for long.
Most people that lose one, lose it from over watering.