Calypso bulbosa is a deciduous, perennial, herbaceous tuberous geophyte with a round, egg-shaped tuber as a perennial organ. It is encased in dead leaf sheaths and has elongated roots. Calypso orchids are typically 8 to 20 cm in height.
These plants like evenly moist soil. So water whenever the growing medium begins to dry out, but do not overwater to the point that it remains soggy. Also, avoid using chlorinated water or water that is high in minerals, as this can damage or even kill the sensitive orchids. Watering with distilled water or collected rainwater is best for the plants.
Calypso orchids grow naturally in the dappled light under trees on forest floors. So they should not be exposed to direct sunlight. Too much sun can scorch their leaves and cause discoloration. They grow well in partial sun to shade.
Avoid using fertilizer on these plants, as they are very sensitive to the addition of any extra chemicals and minerals in their environment. They should be able to get the nutrients they need from the organic matter in their growing media.
The orchids’ natural habitat on forest floors typically contains lots of loose organic matter. Thus, they prefer a light, rich growing medium with a slightly acidic soil pH. The growing medium also must have good drainage.
Moderate to warm temperatures are ideal for calypso orchids. However, this is a hardy forest plant that actually can tolerate the wide swings in temperature within its growing zones. But prolonged exposure to heat above 80 degrees Fahrenheit can stress and eventually kill a plant. Moreover, the orchid does well in moderate humidity but also can handle higher levels of humidity. In dry conditions it is especially imperative to maintain even soil moisture.
