Dendrobium farmeri
A medium-sized, semi-evergreen orchid with 20-40cm long upright cane-like stems. Each four-ribbed stem (pseudobulb) is also a storage of water and nutrients. Three to four leaves are carried near the tip of each stem and last on plant two or more seasons. Dark green, glossy leaves are 8-12cm long and 4-6cm wide. Pendant flowering stems up to 30cm long emerge from the axils of leaves of mature canes and bear a dense cluster of flowers. The flowers are 4-5cm large, mainly white, sometimes very pale pink with round, yellow centre.
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 | White Pink Yellow | Green | ||
|---|---|---|---|---|
| Summer | Green | |||
| Autumn | Green | |||
| Winter | Green |
Position
- Full sun
- Partial shade
Aspect
East–facing or South–facing or West–facing
Exposure
Sheltered Hardiness
H1BBotanical details
- Family
- Orchidaceae
- Native to GB / Ireland
- No
- Foliage
- Evergreen or Semi evergreen
- Habit
- Clump forming, Columnar upright, Pendulous weeping
- 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
- India (Assam), East Himalaya & SE Asia
How to grow
Cultivation
Plants are best grown in a pot or 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. It is a cool to warm-growing orchid with average temperatures between 12-25°C. Provide bright light (avoiding direct mid-day sun) and higher humidity by misting regularly in spring and summer, then move the plant to a bright but cooler place in autumn and winter. Reduce watering and feeding until warmer temperatures initiate 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. Remove spent flowers as necessary, but do not cut the whole cane unless completely shrivelled. Oldest canes may be removed as long as there are enough, younger, thick, leaf-bearing canes on the plant.
Pests
May be susceptible to scale insects, aphids, mealybugs and red spider mite.
Diseases
Generally disease-free.
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