Choisya 'Hilgold' AZTEC GOLD Mexican orange
size/type
medium-sized shrub,medium-sized shrub
usual height
0,8-1,3m
usual width
1-1,5m
leaves
evergreen broadleaf
colour of leaves
flowers
showy
colour of flowers
blooming time
May-June
location
full to partial sun
soil type
acidic (peaty) to neutral
soil moisture requirements
evenly moist but well-drained
USDA zone (lowest)
7 (down to -23°C)
winter protection
for zone 5+6
for zone 7
categorized
We were so thrilled to hear that there was a hardy version of such an unusual and beautiful shrub like evergreen Mexican orange. It is an interspecific hybrid between choisya ternata with wider leaves that is often cultivated in South Europe and in England, and hardier choisya dumosa var. arizonica which has narrow leaves and comes from Arizona and Texas where, though used to hot weather, it withstands all sorts of unpleasant conditions including the ability to grow in elevations up to some 1200m. Choisya name was chosen in honour of Swiss botanist Jacques Denis Choisy (1799-1859), and the hybrid was named choisya x dewitteana (official approval of new botanical name pending). It was bred by Peter More from England and the very first variety from 1989 was called Aztec Pearl.
Description of the plant:
AZTEC GOLD is a Hillier Nurseries introduction from 2012, bred by Alan Postill. It is a bright golden-yellow-leaved choisya shrub. It produces profusion of simple, star-shaped, pure white, and very fragrant flowers with yellow stamens from late April until early June. Their perfume is very similar to orange flowers hence its name Mexican orange or Mexican blossom. The evergreen leaves are palmately divided into 3-7, glossy, narrow leaflets that are rich golden yellow above and lime green to yellow green inside the compact shrub. They release a tempting spicy scent when crushed, yet please do not consume them. They are very resistant to winter sun scorch even in winters of zone 6 and remain lush and handsome all year round. Also, the branches keep them for several years which helps the plant look dense without pruning, and which led some landscape designers to using it for informal evergreen hedges with unusual foliage. Great idea!The hybrid was sold predominantly in England, where it was among the top ten best selling plants for 20 years, later in the Netherlands and France, and now in Italy where it battles with the original c. ternata. Only recently it was introduced to slightly colder parts of Europe as it proved to be hardier than older varieties of cherry laurels and photinias which had a problem during the cold winter of 2010, and a few more afterwards. So far it survived -23°C without any damage which makes it hardy to USDA zone 6.
Grow choisya the same way as a sun loving rhododendron. It has shallow and delicate root system which must never stand in wet ground. Drainage is crucial for its happy life, and so is acid, fertile soil for its healthy look. We highly recommend using mycorrhiza that will help the plant establish sooner and provide enough nutrients. As it flowers from mid spring (on last year’s wood) pruning of any kind should happen immediately after flowering in early summer. If you follow these instructions, you can enjoy a gorgeous plant for many years without virtually any maintenance.
Last update 17-01-2019
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