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Conservatory Greenhouse

Dendrobium jenkinsii

Jenkins's dendrobium

A compact, epiphytic orchid with short, clump-forming pseudobulbs. Each pseudobulb is 3-5cm long, four-ribbed, carrying one oval, dark-green, leathery leaf. Up to 15cm long, arching flowering stems emerge from nodes near the tip of mature pseudobulbs and carry 1 to five, short-lived, yellow flowers. The flowers are 3cm large, with darker yellow-orange centre.

Size
Ultimate height
Up to 10cm
Time to ultimate height
5–10 years
Ultimate spread
0.1–0.5 metres
Growing conditions
Moisture
Well–drained
pH
Neutral
Colour & scent
StemFlowerFoliageFruit
Spring Yellow Orange Green
Summer Green
Autumn Green
Winter Green
Position
  • Partial shade
  • Full sun
Aspect

East–facing or South–facing or West–facing

Exposure
Sheltered
Hardiness
H1B
Botanical details
Family
Orchidaceae
Native to the UK
No
Foliage
Evergreen
Habit
Clump forming
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
SE Asia

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How to grow

Cultivation

Plants are best grown mounted on cork bark or wood if sufficient humidity can be provided. Alternatively, grow in a pot 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 warm-growing orchid and the temperatures should not drop below 16°C. It can be grown similarly to Moth Orchid (Phalaenopsis) but requires much brighter conditions. For best results in cultivation, temperatures should drop at least 10°C at night time. Provide indirect light and high humidity by misting regularly in spring and summer, then move the plant to a bright, room in autumn and winter. Ensure that roots dry-out between the waterings, especially in winter. 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
  • Conservatory and greenhouse
Pruning

No pruning required. Remove spent flowers as necessary.

Pests

May be susceptible to scale insects, aphids, mealybugs and red spider mite.

Diseases

Generally disease-free.

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