| Common Name : | Myrtle-leaf milkwort. |
| Binomial Name : | Polygala myrtifolia |
| Family : | Polygalaceae |
| Photo Taken : | Ireland |
Botanical Identity
Polygala myrtifolia, commonly known as Myrtle-leaf milkwort or September bush, is a fast-growing evergreen shrub in the Polygalaceae family. It is native to the southern coastal regions of South Africa, especially the fynbos biome. The species name "myrtifolia" refers to its leaves’ resemblance to those of the myrtle plant. Polygala myrtifolia is widely cultivated in warm climates for its prolific flowering and ability to thrive in poor soils.
Plant Description
Polygala myrtifolia is a densely branched shrub that typically grows between 1.5 and 3 meters in height, though it can reach up to 4 meters in ideal conditions. The leaves are leathery, smooth, and arranged alternately. They are elliptical to lance-shaped, about 2 to 5 cm long and 1 to 2 cm wide, with entire margins and a pointed or rounded tip. The plant has a neat, upright form and tolerates pruning well, making it suitable for hedging or informal screening. It prefers full sun, well-drained soil, and is tolerant of coastal winds and drought once established.
Flowers and Fruit Characteristics
The flowers of Polygala myrtifolia are showy and uniquely structured, typically deep pink to purple, although paler shades can occur. Each flower is about 2–3 cm across and consists of two upright wing-like petals and a central keel that ends in a brush-like crest—an unusual feature among flowering shrubs. This distinctive keel petal resembles a parrot’s beak and is responsible for the plant's sometimes-used nickname, “parrot’s beak bush.” Flowering occurs throughout the year in mild climates, peaking in spring. The plant produces small seed capsules, sometimes with a fleshy aril that aids in dispersal by ants.
Uses and Cultural Significance
Polygala myrtifolia is widely used as an ornamental plant in gardens and landscaping, especially in Mediterranean and subtropical regions. It is valued for its year-round flowering and ability to attract pollinators such as bees and butterflies. In its native range, it plays a role in stabilizing soil and supporting local ecosystems.
Photos of this Myrtle-leaf milkwort (Polygala myrtifolia) were taken from the following locations:
1) March 2016: Botanical Garden, Dublin, Ireland.
Written by Lonely Traveler,
For blog icflora.blogspot.com
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