Ligustrum lucidum 'EXCELSUM SUPERBUM' Chinese privet, glossy privet

Ligustrum

The genus Ligustrum comprises around 44 species of shrubs and small trees distributed mainly across the temperate and subtropical regions of Eurasia, with its centre of diversity in East Asia. Native species also occur in Europe, North Africa and as far as Australia (Queensland). Somewhat surprisingly, privets belong to the diverse olive family (Oleaceae), which also includes syringa, fraxinus and forsythia. The greatest species richness is found in China, Japan and Korea, from where privets spread into gardens around the world. Fossil records of Ligustrum are scarce, but pollen grains and macrofossils from the Tertiary period confirm its presence in warm forests of the Northern Hemisphere. Botanically, the genus is characterised by opposite leaves, small four-petalled flowers arranged in panicles, and drupe-like fruits that are particularly attractive to birds. It was precisely this combination of inconspicuous flowers and fruit that gave rise to the Latin name, derived from ligare – to bind – referring to the dense, interwoven growth of the branches. The genus was formally defined in the 18th century as part of the systematic classification of plants, although its taxonomy has never been entirely free of debate. Some species were historically transferred between Ligustrum and Syringa, mainly due to similarities in flower structure, and only modern molecular analyses have confirmed their distinct status. In European garden culture, privet became a symbol of clipped hedges, while in Asia it was perceived more as a natural component of woodland edges and village gardens.

Ligustrum lucidum, Chinese privet or glossy privet, originates from East Asia, primarily China, where it grows as an evergreen shrub or small tree along forest margins, in valleys and near villages and towns. The species was described by William Townsend Aiton (1766–1849) at the end of the 18th century, based on plants cultivated in the Royal Botanic Gardens, Kew, where it arrived through botanical expeditions and the intensive exchange of plants between Europe and Asia. It differs from other privets in its calm, almost arboreal presence and its strikingly glossy leaves, which appear refined and luxurious throughout the year, making it a sought-after plant for formal and representative plantings. After its introduction to Europe and confirmation of its hardiness in temperate climates, it quickly spread far beyond its native range. In warmer parts of the world, it became a typical tree-form privet of streets, courtyards and parks, until it became apparent that under ideal conditions it can behave invasively; in some regions it is now considered problematic and subject to extensive control measures.

In the Chinese cultural context, Ligustrum lucidum holds a deeper and more layered significance than most of its relatives. Its fruits, known as nu zhen zi (女贞子), have been used for centuries in traditional Chinese medicine and are symbolically associated with longevity and vitality. Equally remarkable was its role in the economy: Chinese privet served as a host plant for the insect Ericerus pela, which produces thick waxy coatings on the branches. These were scraped off in autumn and processed into so-called white wax, used in the manufacture of candles, seals and medicinal preparations. This technology is more than a thousand years old, and until the early 20th century, when it was displaced by industrially produced paraffin, white wax was among the most widely used waxes. The collection and processing of wax constituted a distinct and respected craft, securing this otherwise unassuming tree a firm place in everyday life and the cultural memory of its homeland.