Poncirus trifoliata – Bitter orange, Japanese bitter orange

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Rutaceae

Poncirus trifoliata – Bitter orange, Japanese bitter orange

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Striking, large shrub to small tree with a round crown. The green twigs and branches are a great ornamental value and an immediately significant feature. They are slightly flat-topped and occupied by substantial, equally green thorns. The three-part leaves, which give the species its name, consist of obovate to elliptical leaf segments. In autumn they turn yellow before falling. From April until into early summer the single flowers appear. They start off bowl-shaped but flatten out completely when they bloom. The flowers have a pleasant fragrance. Another less lavish blossom usually follows in August and September. The fruits are reminiscent of small oranges. They stay greenish-yellow for a long time, eventually turning orange-yellow. They have soft hair and are not edible. Despite its somewhat tropical appearance, Poncirus is quite hardy. The tree requires a sheltered site because it does not tolerate a cold, drying wind very well. Preferably suits a somewhat heavier soil or sunny place in a park or garden.

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Specifications
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Height
2.5 - 6 m
Crown
round, light, open crown, capricious growing
Bark and branches
twigs dark green with sharp thorns, old bark brownish green, rough
Leaf
three-part, leaf segments obovate to elliptical, green 2.5 - 6 cm
Autumn colour
yellow
Flowers
single, white, 3 - 5 cm, April/June, fragrant flowers
Fruits
orange-like, round, matt orange-yellow, 3 - 5 cm
Spines/thorns
Yes
Toxicity
usually not toxic to people, (large) pets and livestock
Soil type
heavy, nutrient-rich, well-drained soil
Soil moisture
suitable for dry soil
Paving
tolerates no paving
Winter hardiness zone
7 (-17,7 to -12,3 °C)
Wind resistance
good
Other resistances
can withstand wind
Application
tree containers, small gardens, patio gardens
Shape
clearstem tree, multi-stem treem
Origin
Northern China, Korea
Clear stem tree Multi-stem tree acid soil calcareous soil clay soil sandy soil tolerates no paving suitable for dry soil can withstand wind 3rd size, smaller than 6 metres open crown green white April average growing Conspicuous bloom Attractive autumn colour non-toxic (usually) Capricious growing Fructe ornamentale Fragrant flowers yes
Frequently asked questions
Poncirus trifoliata

Poncirus trifoliata can eventually reach a height of 2.5 - 6 m, depending on the site and climate conditions.

Poncirus trifoliata has a average growing and can eventually reach a height of 2.5 - 6 m, depending on the site and climate conditions.

The leaves of Poncirus trifoliata turn yellow in autumn.

The right time to plant Poncirus trifoliata is during the dormancy period. In Western Europe, Poncirus trifoliata with root balls can generally be planted from mid-November to late April, although this depends strongly on the climatic conditions and the species of tree.

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