Citrus trifoliata 'Flying Dragon'

RHS Plant Profile

Japanese bitter orange 'Flying Dragon'

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Synonyms

Poncirus trifoliata 'Flying Dragon'

Shrubs Trees

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A deciduous shrub reaching around 3m, with trifoliate green leaves that turn yellow in autumn. It is fast-growing and has long stout thorns - making it a suitable hedge plant. Plentiful fragrant white flowers open in spring before the leaves and develop into 5cm lemon-like fruits which remain on the plant after the leaves have fallen. The tangled green stems with curved thorns and yellow fruit look very ornamental in winter

Position

Full sun

Soil Types

Clay, Loam, Sand

Max Height

2.5-4 metres

Max Spread

1.5-2.5 metres

Size

Time to Maturity: 5–10 years
Max Spread: 1.5-2.5 metres
Max Height: 2.5-4 metres

Growing Conditions

Clay Loam Sand

Moisture: Moist but well–drained
pH: Neutral or Acid

Position

Full sun

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): H6

Colour & Scent

Fragrance Flower

Season	Stem	Flower	Foliage	Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family: Rutaceae
Native to GB/Ireland: No
Foliage: Deciduous
Habit: Bushy, Spreading branched
Potentially harmful: Fruit harmful to skin with sunlight/skin allergen (lemon and lime-bearing Citrus only). Wear gloves and other protective equipment when handling
Genus: Citrus are typically evergreen shrubs or trees, frequently spiny, with simple, leathery, aromatic leaves, usually with winged stalks, and often fragrant white or pink-tinged flowers, followed by large, juicy fruits
Name Status: Accepted

How to Grow

Cultivation

Grow as a conservatory or greenhouse plant, in a container of peat-free, loam-based potting compost with added grit, in full light, with shade from hot sun. In growth during spring and summer, water freely, and mist daily. Apply fertilisers formulated for citrus, throughout the year, following the manufacturer’s instructions; water sparingly in winter. See citrus cultivation for further information

Propagation

Propagate from seed or by semi-ripe cuttings in summer

Suggested planting locations and garden types

Architectural
City and courtyard gardens
Hedging and screens

Pruning

Prunng group 1 or can be clipped to shape

Pests

Generally pest-free

Diseases

Generally disease-free