Dendrobium mortii
slender pencil orchid
A small to medium-sized, epiphytic or lithophytic, tropical orchid with thin, pencil-like, fleshy green leaves, approximately 4-10cm long. Thin, pendulous stems grow up to 70cm long. Solitary, upside-down flowers emerge from the axils of leaves and are approximately 2cm across. Petals and sepals are pale green, lip is white with purple markings.
Size
Ultimate height
0.1–0.5 metresTime to ultimate height
5–10 yearsUltimate spread
0.1–0.5 metresGrowing conditions
Moisture
Well–drainedpH
NeutralColour & scent
| Stem | Flower | Foliage | Fruit | |
| Spring | Green White Purple | Green | ||
|---|---|---|---|---|
| Summer | Green | |||
| Autumn | Green | |||
| Winter | Green |
Position
- Full sun
- Partial shade
Aspect
East–facing or South–facing or North–facing or West–facing
Exposure
Sheltered Hardiness
H1CBotanical details
- Family
- Orchidaceae
- Native to the UK
- No
- Foliage
- Evergreen
- Habit
- Pendulous weeping, Trailing
- Genus
Dendrobium are epiphytic and terrestrial orchids with elongated, stem-like pseudobulbs bearing linear to ovate leaves. Racemes or panicles of showy flowers are produced from nodes along the stems mainly in spring
- Name status
Correct
- Plant range
- Australia (NSW, Queensland)
How to grow
Cultivation
Plants are best grown mounted on cork bark or wood if sufficient humidity can be provided. Alternatively, grow in a basket in an epiphytic, medium grade, bark-based potting mix with added perlite, moss, or coir. As with many orchids, they grow best when the roots are slightly restricted. Therefore, avoid over-potting or frequent root disturbance. Provide bright light and sufficient humidity by misting regularly throughout the growing season. Reduce watering and feeding in winter until warmer temperatures initiate flowering and new growth in spring. See indoor orchid cultivation
Propagation
Propagation by seed is only possible in controlled laboratory environment. Mature plants may be divided when the plant overgrows the pot. Sideshoots (keiki) may develop on older canes - remove and pot them into sphagnum moss when the new roots are at least 2cm long.
Suggested planting locations and garden types
- Houseplants
- Conservatory and greenhouse
Pruning
No pruning required.
Pests
May be susceptible to scale insects, aphids, mealybugs and red spider mite.
Diseases
Generally disease-free.
Get involved
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