Citrus × aurantium ‘Canaliculata’

Parentage and cultivated origin of Citrus × aurantium ‘Canaliculata’

‘Canaliculata’ is a cultivated selection of Citrus × aurantium, a bitter-orange cultigen derived from Citrus maxima × Citrus reticulata.

The selection has long been maintained in Mediterranean citrus collections.

Growing Citrus × aurantium ‘Canaliculata’

• Light: Give the crown strong direct light indoors, using supplementary light where indoor light is limited.
• Humidity: Moderate room humidity around 50–60% is suitable. Keep the foliage clear of hot, dry radiator air and allow space around the crown.
• Cooler conditions: Keep temperatures around 10–28 °C. Avoid prolonged temperatures below 3 °C. In cooler conditions, keep ‘Canaliculata’ bright and frost-free. Reduce water and fertiliser if growth slows.
• Watering and mix: Let the upper mix dry and the centre become lightly moist before watering thoroughly, then allow all excess water to drain. Use a durable, airy citrus mix and keep the trunk base and graft point above the surface.
• Pruning and support: Prune selected shoots to shape the crown while keeping healthy fruiting tips. Support a branch if developing fruit makes it bend sharply.
• Feeding: Feed with a citrus fertiliser at a moderate dose during active growth or fruiting.
• Repotting: Repot when roots are crowded or an old mix has become compacted and slow to drain. For crowded roots, choose a pot only a little larger so its centre can still dry steadily. If the roots still have enough room, refresh the mix in the same-sized container.

‘Canaliculata’ problems and first checks

• Older leaves yellow and drop while the mix dries slowly: The pot may be staying wet for too long, especially in a cool room or oversized pot. Delay the next watering until the upper layer has dried, empty standing water and inspect the roots if the decline continues. Use the root-rot guide if soft dark roots are present.
• Flowers or young fruit drop in large numbers: Drought, abrupt relocation, cold draughts or a stressed root system can increase shedding. Stabilise light and temperature, check moisture below the surface before watering and resume feeding once the roots are healthy and active.
• Sticky leaves and shell-like bumps appear on stems: Scale insects can hide along woody shoots and leaf stalks. Isolate the tree, inspect the entire crown and remove insects you can reach. If further treatment is needed, use a product labelled for scale and the plant, repeating only as directed on the label. The scale guide helps confirm whether attached bumps are live insects.
• Sticky gum or soft dark tissue appears around the base of the trunk: Constant moisture against the bark can damage the lower trunk and roots. Keep the base of the trunk above the mix, stop water collecting there and inspect the bark and roots promptly if the dark area is spreading.

If the cause is still unclear, send us clear photos of the whole plant, the affected area and the potting mix so we can help you narrow it down.

Keep Citrus × aurantium ‘Canaliculata’ away from pets

• The fruit flesh is edible, while leaves, peel and other plant material can irritate cats and dogs.
• These parts contain essential oils and psoralens that may cause vomiting, stomach pain, unusual tiredness or skin irritation.
• Contact a veterinarian if a pet chews the plant or develops symptoms. Seek medical advice if a person becomes unwell after exposure.

When was Citrus × aurantium first published, and what does it mean?

Citrus is the classical Latin name used for citron and related citrus plants. The epithet aurantium is an old botanical Latin name for the orange.

Carl Linnaeus established the genus Citrus in 1753 in Species Plantarum, page 782.

Carl Linnaeus first described Citrus × aurantium in 1753 in Species Plantarum, page 783.