This is a group of mostly terrestrial orchids (growing in the ground), but unlike many other terrestrial orchids, they do not produce pseudobulbs at the base of their stems.
Grow Paphiopedilum in a shaded position in summer, with protection from direct sunshine. Move to a position in bright, un-shaded light in winter.
The plain green-leaved slipper orchids are cool temperature growers, preferring a growing temperature range of 10-25°C (50-77°F), and requiring a minimum winter temperature of 10-13°C (50-55°F).
The mottled-leaved types tend to require a warmer temperature, needing a minimum night temperature of 18°C (65°F) and a daytime temperature of 20-30°C (68-86°F) with high humidity.
Slipper orchids generally flower from November to March, but flowers can appear at any time of the year. Flowers last up to three months, and may need support with a stake.
Watering, humidity and feeding
Water Paphiopedilum orchids regularly in spring and summer. Allow the compost to dry out a little between watering and avoid overwatering. Reduce watering during the winter months, but don’t let the compost dry out completely. Avoid overhead watering and wetting the leaves.
Do not mist this orchid. Instead, increase humidity by standing plants on an upturned saucer in a tray of damp pebbles.
Apply proprietary orchid fertiliser every two to three weeks at the application rate recommended on the packet. Reduce the frequency and/or strength of feeding in the winter.
Re-pot after flowering between February and June, using specialist orchid compost. Do not re-pot into a container that is larger than necessary; choose a pot just large enough to comfortably contain the roots.