Growing guideTerrestrial orchids
Society notes on several terrestrial orchid genera. Information originally referenced from Starting Out With Orchids by David L. Jones.
Calanthe
A clumping orchid found from South Africa to Japan, America and Asia. Calanthe australasica is an Australian native distributed from north-eastern Queensland to south-eastern NSW.
Cultivation
Use a soil-less mix based on coarse stones, peat, coir, fern fibre, leaf mould and perlite. Deciduous species need a dry rest after their leaves shed; evergreen types should be kept moist year-round, but drier in winter.
Ludisia
A widespread tropical terrestrial with colourful, fleshy leaves and spikes of white flowers.
Cultivation
Grow in a shallow pot or saucer of well-drained fibrous mix with shade, gentle airflow, high humidity and year-round watering. Protect from slugs and snails.
Paphiopedilum
Also called slipper orchids, these grow in leaf litter, rock crevices and sandy soil from India to New Guinea and the Solomon Islands.
Cultivation
Keep snugly potted in a well-drained bark-based mix. Give shade in summer, brighter light in winter, and water and mist foliage frequently through summer.
Spathoglottis
A genus of colourful terrestrial orchids growing in moist areas from India to New Guinea and northern Australia.
Cultivation
Suitable for gardens in the tropics or well-drained terrestrial mixes. Provide warmth, bright light, strong air movement and regular summer water.