About
Hydnophytum formicarum, the ant plant, is a remarkable epiphytic or lithophytic plant from Southeast Asia producing a large, swollen, hollow, corm-like base in which ants nest � a classic example of myrmecophily. Above, it bears glossy, oval leaves and tiny, white, tubular flowers. A fascinating botanical curiosity for a warm, humid greenhouse.
About the genus
Hydnophytum are epiphytic plants from tropical Southeast Asia and the Pacific with a large, swollen, ant-inhabited base and simple leaves with small, white, tubular flowers. Fascinating botanical curiosities grown in warm, humid greenhouses.
Growing conditions
SunlightFull sun, Partial shade
Soil typeClay, Loam
Soil pHAcid, Alkaline, Neutral
Soil moistureMoist but well-drained
AspectEast-facing, North-facing, West-facing
ExposureSheltered
UK hardinessH4
Plant details
Plant typeClimber Wall Shrub
HabitClimbing
FoliageDeciduous, Semi evergreen
Height8-12 metres
Spreadwider than 8 metres
Time to full height5-10 years
Suggested usesCity and courtyard gardens, Cottage and informal garden
Native toHimalaya to China, Taiwan
ToxicitySkin allergen. Wear gloves and other protective equipment when handling. Pets (dogs, cats): Harmful if eaten. For further information and contact numbers regarding pets, see the HTA guide to potentially harmful plants
Care notes
CultivationGrow in moist but well-drained soil rich in organic matter, and shelter from cold, drying winds. This species climbs using aerial roots and will need suitable support, especially when young. Mulch annually in spring. See climbing hydrangea cultivation for more detailed advice
PruningPruning Group 11, after flowering
PropagationPropagate by layering
Pest resistanceMay be susceptible to aphids, capsid bug, red spider mite, stem and bulb eelworm, vine weevil and scale insects
Disease resistanceMay be susceptible to a leaf spot, powdery mildews, grey moulds (Botrytis) and honey fungus (rarely)