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CITRUS trifoliata
Commonly known as Japanese bitter orange
(formerly Ponicirus trifolata) - green stems armed with stout spines. Trifoliate leaves and white strongly scented flowers like Orange blossom
Further Reading....
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Deciduous - alternate, 3-palmate leaves, 2.5-6cm (1-2½in) long comprise 3 obovate, dark green leaflets, turning yellow in autumn
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White -
Height - 5m (16ft) -
Spread - 5m (16ft)
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Medium shrub - Typically grow to around 4-6 feet in height - or small tree. Flowers on second-year wood. Produces solitary flowers followed by orange-like, inedible, green then orange fruit, 4cm (1½in) across
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Tender - cool or frost free greenhouse - Tolerant of low temperatures, but not surviving being frozen. Except in frost-free inner-city areas or coastal extremities requires glasshouse conditions. Plant can withstand temperatures down to 1°C (34°F) -
Full sun - shelter from cold winds -
Additional Features - Good to know - - intoduced into UK by Robert Fortune, Scottish plant hunter, in 1850. Can flower in late spring and again in autumn. -
Pests & Diseases - none -
Place of origin - northern China, Korea -
Flower Shape - Cup-shaped - - cup-shaped, then saucer-shaped flowers 5cm (2in) across
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Hardiness - Half hardy (down to 0) -
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Leaf form - Palmate - see photos above -
Leaf margin - Entire - see photos above
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Leaf shape - Obovate - see photos above
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Pruning group - Pruning group 1
Suitable for: Deciduous and evergreen trees, and some deciduous shrubs.
Pruning: Minimal pruning required. Prune wayward or crossing branches to maintain a healthy framework.
When: When dormant in the late winter/early spring. Some in the summer/autumn to prevent bleeding of sap.
RHS group 1 -
Seasonal Interest - Autumn -
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Spring
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Summer
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Winter
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Soil Conditions - Fertile well drained soil -
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Tree Shape - Rounded to broadly spreading -
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Wildlife - Rabbit Resistant -
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Citrus Trees - Care Guide
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5m (16ft)
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5m (16ft) |
Useful extras...
Fertilisers & Feeds - Chempak
Citrus Feed
A high nitrogen formula to boost growth in both summer and winter.
Considerably cheaper than on Amazon!
2 options from £5.00
Vermin & Pest Control
Fly Paper
Pack of 4 fly papers. Traditional and non-toxic, easy to use and disposable. Can catch up to 100 flies!
Only £2.00
Vermin & Pest Control
Fly Window Stickers
Perfect and attractive way to catch flies.
Sunflower design. 4 stickers in each pack.
Only £4.80
Vermin & Pest Control
SB Plant Invigorator
This is a non-biological non-chemical plant insecticide and mildewcide.
Works against the physical motion of the insect. Perfect for all plants and edible crops.
Only £9.00
Garden Goodies
Slate Plant Labels
These wonderfully tactile natural slate plant labels are hand made in Cornwall and come with a chalk pen.
Just stick them in your pot or border. Pack of 6.
Only £10.20
Garden Goodies
Slate Tie-on Plant Labels
Hand made in Cornwall, these delightful natural slate labels are perfect for pots.
Comes with chalk pen. Pack of 5
Only £10.20
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