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Conservatory Greenhouse

Cymbidium Magna Charta gx 'Spring Promise'

boat orchid Magna Charta gx 'Spring Promise'

A medium to large-sized, evergreen orchid hybrid, producing a clump of egg-shaped pseudobulbs. Each pseudobulb is covered with leaf-bearing, basal sheaths. The leaves are linear, semi-rigid and leathery, up to 90cm long and 2-3cm wide. Upright or arching flowering stems emerge from the bases of new mature pseudobulbs in late winter and spring and carry 6-15 flowers. The waxy, long-lasting flowers measuring up to 10cm across are pale cream with pink linear markings and a white lip with a dark pink pattern

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Ultimate height

0.5–1 metres

Time to ultimate height

2–5 years

Ultimate spread

0.5–1 metres

Moisture

Moist but well–drained, Well–drained

pH

Neutral

	Stem	Flower	Foliage	Fruit
Spring
Summer
Autumn
Winter

Full sun
Partial shade

Aspect

East–facing or North–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)

H1C

Botanical details

Family: Orchidaceae
Native to GB / Ireland: No
Foliage: Evergreen
Habit: Clump forming, Columnar upright
Potentially harmful: Skin allergen. Wear gloves and other protective equipment when handling
Genus: Cymbidium are epiphytic, lithophytic or terrestrial orchids with prominent spherical to ovoid pseudobulbs, long linear leaves and fleshy white roots. Several long lasting showy flowers with a distinctive 3-lobed lip are borne on erect or arching flower spikes from the bases of the pseudobulbs
Name status: Unresolved

How to grow

Cultivation

Grow in an open, free-draining orchid compost with addition of perlite, sphagnum moss or coir. Requires day temperatures around 16°C and 10°C at night. Provide good light levels, but avoid direct sunlight. Water plants thoroughly when compost is almost dry, allow to drain and use orchid fertiliser regularly during growing season. Reduce watering in winter. Place outside in dappled shade during the summer months to aid flower initiation. See cymbidium cultivation for more detailed information

Propagation

Propagation by seed is only possible in a controlled laboratory environment. Mature plants may be divided in early or mid spring, when the plant overgrows its container. Each division should have at least 3 older pseudobulbs with a sufficient amount of stored energy and water, to support new growth and reduce stress after repotting

Suggested planting locations and garden types

Houseplants
Conservatory and greenhouse
Cut flowers

Pruning

No pruning required. Cut down flowered stems to base

Pests

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

Diseases

Generally disease-free. Sterilising cutting tools may prevent virus diseases, such as Cymbidium Mosaic Virus (CMV)

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