Boronia lanceolata

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Common products:
Boronia lanceolata is cultivated as an ornamental shrub for its fragrant foliage. It is sold by Australian native plant nurseries under both scientific and common names and is employed in residential and commercial landscaping for low hedges, borders, and scented garden plantings. The plant's compact habit (typically 1–2 m tall) and dense, evergreen foliage make it suitable for mass planting or as a feature shrub in mixed native plantings. Its aromatic leaves release a strong lemon‑like scent when bruised, adding sensory interest to garden designs. While the species is not harvested for timber, fiber, or food, its primary commercial role is as an ornamental horticultural product.

Properties relevant to use:
The leaves of B. lanceolata produce a volatile essential oil dominated by monoterpenes characteristic of citrus fragrance. Analyses report citronellal in the range of 30–35 % of the oil, with citronellol accounting for approximately 20–25 %, and smaller percentages of geranyl acetate, linalool and other terpenoids. This composition gives the foliage a potent lemon‑citronella aroma and underlies its ornamental fragrance appeal. Morphologically, the species forms a dense, rounded shrub with opposite, narrow lanceolate leaves; it tolerates pruning, has moderate growth, and thrives in well‑drained, slightly acidic soils with full sun to light shade. These attributes—compact size, pruning tolerance, and pronounced aromatic foliage—enable its use as a low‑maintenance, scented hedging plant in horticulture.

Sustainability and sourcing:
The species is not listed as threatened under the Australian Environment Protection and Biodiversity Conservation Act or state legislation, and field surveys indicate stable populations in its native range of eastern Queensland and northern New South Wales. Commercial supply is generated through nursery propagation, chiefly by semi‑hardwood cuttings under controlled greenhouse conditions, which reduces reliance on wild collection. Sustainable horticultural practices such as seed collection and vegetative propagation have been promoted by native plant societies to ensure continued availability without impact on wild populations.

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