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Conservatory Greenhouse

Dendrobium anosmum

unscented dendrobium

A large-sized, epiphytic orchid with 120cm long, pendulous, cane-like, noded stems. Each new stem is enveloped with alternate leaf-sheaths along each node, carrying one bright green, glossy, deciduous leaf, 12-18cm long. Short flowering stems, carrying one 7cm large flower, appear from the nodes along mature, leafless stems in spring. The flowers are usually pale pink, but may vary from whitish to dark pink forms. Characteristic for this species is the densely hairy lip.

Synonyms

Dendrobium Superbum gx

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Ultimate height

0.5–1 metres

Time to ultimate height

5–10 years

Ultimate spread

0.5–1 metres

Moisture

Well–drained

pH

Neutral

	Stem	Flower	Foliage	Fruit
Spring
Summer
Autumn
Winter

Full sun
Partial shade

Aspect

East–facing or South–facing or West–facing

Exposure

Sheltered

Hardiness
Hardiness ratings
All ratings refer to the UK growing conditions unless otherwise stated. Minimum temperature ranges (in degrees C) are shown in brackets
H1a: under glass all year (>15C)
H1b: can be grown outside in the summer (10 - 15)
H1c: can be grown outside in the summer (5 - 10)
H2: tolerant of low temperatures, but not surviving being frozen (1 to 5)
H3: hardy in coastal and relatively mild parts of the UK (-5 to 1)
H4: hardy through most of the UK (-10 to -5)
H5: hardy in most places throughout the UK even in severe winters (-15 to -10)
H6: hardy in all of UK and northern Europe (-20 to -15)
H7: hardy in the severest European continental climates (< -20)

H1A

Botanical details

Family: Orchidaceae
Native to GB / Ireland: No
Foliage: Deciduous
Habit: Clump forming, 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: SE Asia

How to grow

Cultivation

Plants are best grown in basket or mounted on cork bark or wood if grown in conditions where sufficient humidity can be provided during the growing season. Grow 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, filtered light throughout the year. The average temperatures are 25-30°C during day and 16-20°C at night time, with an amplitude of 8-10°C between day and night. Plant requires frequent watering and relatively high humidity during summer months and a period of rest in winter - reduce watering and feeding in October, 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. Remove spent flowers as necessary, but do not cut the whole cane unless completely shrivelled - usually after few years of growth. Oldest canes may be removed as long as there are enough younger 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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