Dendrobium rhombeum
Care, watering, light and tips for Dendrobium rhombeum on Floravia.
Quick facts
- Family: Orchidaceae
- Difficulty: Demanding
- Watering: every 4 days
- Light: Indirect light
- Temperature: 15–30 °C
About Dendrobium rhombeum
Dendrobium rhombeum is a compact epiphytic orchid, native to the Philippines, known for its distinctive rhomboid-shaped pseudobulbs from which it gets its name. It produces small, delicate flowers, typically white to cream, with a labellum that may feature purple or yellow markings. This is an excellent choice for orchid collectors looking for an interesting species for terrariums or display on a well-lit windowsill.
Native range
Philippines
Care tips
It requires bright, indirect light, avoiding direct midday sun which can scorch its leaves and pseudobulbs. Watering should be regular during active growth, allowing the substrate to dry slightly between waterings, and reduced in winter. Use a well-draining substrate specifically for epiphytic orchids, such as pine bark or coconut fiber. A common mistake is overwatering, which can lead to root rot.
How to save a dying Dendrobium rhombeum
- Warning signs
- Wrinkled pseudobulbs, yellow/soft leaves, rotten/dry roots. No blooms.
- First aid
- Remove old substrate, trim dead roots. Rehydrate in warm water if dehydrated. Repot in fresh medium.
- What kills it
- Overwatering (rots roots/pseudobulbs) or complete lack of water. Insufficient light or scorching direct sun.
- Can it be saved?
- Yes, if pseudobulbs are firm and some healthy roots remain. Responds well to repotting and proper watering.