Poncirus Trifoliata
Poncirus Trifoliata

Poncirus Trifoliata

£13.99

Out of stock

SKU: poncirus-trifoliata Category:
Common Name: Japanese Bitter Orange
Size: 2-3 LITRE
Hardiness: H5
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 (>15˚C)
  • H1b: can be grown outside in the summer (10 - 15 ˚C)
  • H1c: can be grown outside in the summer (5 - 10 ˚C)
  • H2: tolerant of low temperatures, but not surviving being frozen (1 to 5 ˚C)
  • H3: hardy in coastal and relatively mild parts of the UK (-5 to 1 ˚C)
  • H4: hardy through most of the UK (-10 to -5 ˚C)
  • H5: hardy in most places throughout the UK even in severe winters (-15 to -10 ˚C)
  • H6: hardy in all of UK and northern Europe (-20 to -15 ˚C)
  • H7: hardy in the severest European continental climates (< -20 ˚C)
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2-3 Litre Pot

  • Position: Full sun
  • Soil: Well drained
  • Growth Rate: Average
  • Flowering Period: May – August
  • Hardiness: H5
  • Eventual Height: 4 – 8m
  • Eventual Spread: 2.5 – 4m

Poncirus Trifoliata, commonly known as ‘Japanese Bitter Orange’ is a bushy or small tree with distinctive features that make it an intriguing addition to gardens. Native to East Asia, this hardy and resilient plant belongs to the citrus family Rutaceae.

It typically reaches heights of up to 8 metres with a spread of approximately 4 metres.  However, it can be pruned to maintain a more compact form.  The branches are armed with formidable thorns, making it an effective barrier plant. The thorns are often paired and can be quite sharp.

As the name “trifoliata” suggests, the compound leaves are divided into three leaflets. The dark green foliage has a glossy appearance and in Spring, fragrant white flowers with a hint of citrus bloom, creating a visually appealing display. The flowers are typically solitary or arranged in small clusters.

One of the most distinctive features of this variety is its small, citrus-like fruit. The fruit is typically round and segmented, resembling a miniature orange. However, it is extremely sour and not suitable for consumption.

While Poncirus Trifoliata has its ornamental and practical merits, it’s important to be aware of its thorns and the sour nature of its fruit. As with any plant, understanding its characteristics and providing appropriate care contribute to a successful and harmonious integration into the landscape.

How to care for your Poncirus Trifoliata

  • Planting Location:  Choose a well-drained location with full sun to partial shade. It prefers a sunny environment for optimal growth and flowering.
  • Soil: It is adaptable to various soil types but prefers well-draining soil. It can tolerate slightly acidic to slightly alkaline conditions.
  • Watering:  Water regularly during the growing season, especially in the first few years after planting. Once established, it is somewhat drought-tolerant, but occasional watering during dry spells is beneficial.
  • Mulching:  Apply a layer of organic mulch around the base of the plant to retain soil moisture, suppress weeds, and regulate soil temperature. Mulching also helps protect the shallow root system.
  • Thorns and Pruning:  Exercise caution when working around this plant due to its sharp thorns. Wear protective clothing and gloves.  Prune to shape the plant or control its size.  Be mindful of the thorns during pruning, and avoid excessive pruning to maintain its natural form.
  • Fertilisation:  It is not particularly demanding when it comes to fertilisation. Apply a balanced, slow-release fertiliser in Spring to provide essential nutrients for healthy growth.
  • Fruit Management:   If you wish to minimise litter or prevent the spread of seedlings, consider removing the fruit before it matures. The fruit is sour and not suitable for consumption.
  • Cold Protection:  While it is hardy down to -15˚C, providing some protection during severe winters, such as mulching around the base, can be beneficial, especially in regions with extremely low temperatures.
  • Wildlife Interaction:  It can attract small birds due to its thorny branches, providing them with a sheltered habitat. Consider its role in supporting local wildlife.

By following these care guidelines, you can promote the health and vigour of Poncirus Trifoliata in your garden. Adaptable and resilient, it adds an interesting and functional element to the landscape, and understanding its specific needs contributes to a successful and harmonious cultivation.

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