Mexican Orange Flower
Choisya ternata
Family: Rutaceae
What it is like
Choisya ternata is an evergreen Shrub growing to 3 m (9ft) by 3 m (9ft) at a medium rate. See above for USDA hardiness. It is hardy to UK zone 7. It is in leaf all year, in flower from April to August. The species is hermaphrodite (has both male and female organs) and is pollinated by Insects. Suitable for: light (sandy) and medium (loamy) soils and prefers well-drained soil. Suitable pH: mildly acid, neutral and basic (mildly alkaline) soils. It can grow in full shade (deep woodland) semi-shade (light woodland) or no shade. It prefers moist soil and can tolerate drought. It can tolerate atmospheric pollution.
Height (m): 3
Where it is found
Chalky soils, often near the sea.
Southern N. America - Mexico.
Conservation Status:
Countries/locations it is found in
How it is used
Food
Rating: 0
Medicine
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Other
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Plants can be grown as an informal hedge, they also respond well to clipping and so can be grown in a more formal manner.
Hedge: Plants that can be grown as hedges.
Hedge: Hedge
Scented Plants: Plants noted for their scent
How it is grown
Requires an open sunny but sheltered position. Plants can be damaged by cold winds. Plants grow equally well whether in full sun or in deep shade. They succeed in most soils, but prefer a rather light loam. They require a well-drained soil, tolerating drought once established and atmospheric pollution. A very ornamental plant, it usually survives very severe winters in Britain but can be damaged in spells of lesser cold, especially in the New Year. Plants are normally undamaged at temperatures around -10°c but can be defoliated at -15°c. Whole branches have a habit of dying for no apparent reason. The Mexican orange flower is moderately fast growing when young, but it soon slows down with age. The plants are very tolerant of pruning and can be cut right back to the ground if required. Pruning is generally unnecessary for this species, apart from cutting out frost-damaged wood. Some named forms have been selected for their ornamental value. The flowers appear mainly in late spring, but plants can produce a few flowers in the autumn. They often also flower intermittently all through the summer. The flowers are borne at the shoot tips. The crushed foliage has a pungent aromatic scent of oranges and the flowers are sweetly fragrant with the powerful aroma of orange blossom. Plants in this genus are notably resistant to honey fungus.
Propagating it: Seed - sow spring in a greenhouse. When they are large enough to handle, prick the seedlings out into individual pots and grow them on in a greenhouse for at least their first winter. Plant them out into their permanent positions in late spring or early summer, after the last expected frosts. Cuttings of half-ripe wood, 6 - 8cm long, early July in gentle heat in individual pots in a frame. High percentage. Cuttings of almost ripe wood, 10 - 15cm with a heel, August in a frame. Good percentage. Plant out in spring.
Best place to grow: Woodland Garden Dappled Shade; Shady Edge; not Deep Shade; Hedge;
Habit: Shrub
Hardiness: 6-9
Growth: Medium
Soil: Light (sandy), medium
Shade: Full shade, semi-shade, no shade
Moisture: Moist