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Dendrobium antennatum × helix 'Pomio Brown'

A medium to large-sized, evergreen orchid with long, upright, cane-like stems (pseudobulbs), up to 100cm tall. Bright green leaves are arranged along the cane nodes, stiff and up to 15cm long and 3-5cm wide. The flowering stems measuring up to 50cm emerge from the upper nodes of mature pseudobulbs and carry 3 to 20 flowers. The flowers are waxy and long-lasting, approximately 5cm across. The petals are yellow or brown, often spirally twisted and pointing upwards - resembling an antelope

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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

Exposed or 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

Native to GB / Ireland: No
Foliage: Evergreen
Habit: Clump forming, Columnar upright

How to grow

Cultivation

Plants are best grown in a pot in an epiphytic, medium grade, bark-based potting mix with addition of sustainably sourced 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. Provide very bright light conditions and 80% humidity throughout the year. 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 sustainably farmed 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 at least three, 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

Get involved

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