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Dune Myrtle
Eugenia capensis subsp. capensis
SA tree no: 553.1
English: Dune Myrtle, Coastal Myrtle, Cape Myrtle, Wild Cherry, Bush Cherry
Afrikaans: Duinemirt, Kaapse Mirt, Wildekersie, Wildejamboes
Xhosa: umNyamathi
Historical scientific names: Eugenia capensis.
Misapplied scientific names: Eugenia capensis subsp. zeyheri
Eugenia capensis subsp. capensis, commonly known as the Dune Myrtle or Coastal Myrtle, is a versatile and attractive indigenous shrub or small tree native to the coastal regions of South Africa. This resilient plant, belonging to the Myrtle family, is cherished for its dense, glossy evergreen foliage and its abundant clusters of small, delicate white flowers.
These charming blooms are followed by small, round, red to black edible fruits, making it a valuable addition to coastal and fynbos gardens, providing both beauty and ecological benefit.
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Distinguishing features:
Relatively small, rounded, or ovate, glossy, dark green leaves with a leathery texture.
Small, fluffy, white or cream-coloured flowers borne in dense clusters.
Small, round, edible fruits that ripen to bright red or dark purple/black.
Typically a dense, multi-stemmed shrub, often with a compact, rounded form.
Well-adapted to harsh coastal conditions, including strong winds and salt spray.
Overall appearance:
Eugenia capensis subsp. capensis grows as a dense, evergreen, multi-stemmed shrub or a small, compact tree. It has a neat, rounded to spreading crown with attractive, glossy foliage, making it an excellent plant for hedging, screening, or coastal landscaping.
Height:
This plant typically grows to a height of 1 to 3 metres, occasionally reaching up to 5 metres in sheltered conditions.
Width:
It can spread to a width of 1.5 to 3 metres, forming a bushy and dense mass.
Leaves:
The leaves are simple, opposite, ovate to elliptic or almost round, and relatively small, usually measuring 1.5-4 cm long. They are thick, leathery, and glossy dark green above, paler and duller underneath, with entire (smooth) margins. They often have visible oil glands when held against the light.
Flowers:
The flowers are small, typically 1-1.5 cm in diameter, and are borne in dense clusters in the leaf axils. They are white to cream-coloured and have a characteristic fluffy appearance due to numerous prominent stamens. The plant is hermaphroditic, meaning each flower contains both male and female reproductive parts.
Flowering season:
It typically flowers during late spring to summer, generally from October to February. In Kenton-on-Sea, Eastern Cape (current month June), it would have completed its main flowering season, but occasional, sporadic blooms might still be seen.
Fruits:
The fruits are small, rounded, berry-like drupes, usually 1-1.5 cm in diameter. They mature from green to bright red, eventually turning dark purple or black when fully ripe. They are fleshy, edible, and somewhat juicy, containing one or two seeds.
Seeds:
The fruits contain one or two small, hard, rounded or kidney-shaped seeds.
Bark:
On young stems, the bark is smooth and greyish-brown. On older stems and trunks, the bark can become somewhat flaky or slightly fissured.
Stems:
It typically forms multiple slender stems arising from the base, giving it a bushy or shrubby appearance. The stems are relatively smooth and branch well.
Wood:
The wood is hard and durable, typical of the Myrtaceae family.
Roots:
It develops a strong, spreading, non-invasive root system, well-adapted to sandy and often unstable coastal dune environments.
Soil type:
It is highly adaptable to various soil types but thrives in well-drained, sandy soils. It tolerates poor soil conditions and is well-suited to coastal sandy environments.
Aspect:
Thrives in full sun but can tolerate light shade. It is moderately frost hardy once established, tolerating light to moderate frost, though it might shed some leaves in very cold conditions. It is highly tolerant of strong coastal winds and salt spray, making it ideal for exposed positions.
Edibility:
The ripe fruits are edible and have a pleasant, slightly tart to sweet flavour. They can be eaten fresh.
Toxicity:
Eugenia capensis subsp. capensis is not known to be toxic. Its fruits are widely consumed.
Uses:
Food: The ripe fruits are eaten fresh by humans.
Ornamental: An excellent choice for indigenous gardens, especially in coastal areas, used for hedges, screens, or as a small specimen plant. Its dense foliage and attractive fruits enhance garden aesthetics.
Hedge/Screening: Its dense growth and ability to withstand pruning make it ideal for creating privacy screens or informal hedges.
Coastal Stabilisation: Highly valued for its tolerance to harsh coastal conditions, it is often used for dune stabilisation and erosion control in sandy environments.
Wildlife Attraction: Provides food and shelter for various wildlife.
Ecology:
The fruits of Eugenia capensis subsp. capensis are a significant food source for a wide variety of frugivorous birds (e.g., bulbuls, starlings, mousebirds) and small mammals, which are crucial for seed dispersal. Its flowers attract numerous pollinating insects, including bees, contributing to local biodiversity. Its dense growth provides excellent cover and nesting sites for birds in often exposed coastal habitats.
Distribution and habitat:
This subspecies is endemic to South Africa, primarily found along the southern and eastern coastal regions, from the Western Cape (e.g., Cape Peninsula) through the Eastern Cape and KwaZulu-Natal provinces. It typically grows in coastal dunes, dune thickets, and coastal scrub, often forming a vital component of the vegetation closest to the sea.
Derivation of name:
Eugenia: The genus name honours Prince Eugene of Savoy (1663-1736), a famous patron of botany.
capensis: The specific epithet is Latin for "of the Cape," referring to its origin in the Cape region of South Africa.
subsp. capensis: The "subsp. capensis" indicates that this is the nominate or original subspecies, meaning it was the first form described and represents the typical characteristics of the species Eugenia capensis. This distinguishes it from other subspecies like Eugenia capensis subsp. zeyheri.
Historical aspects:
Eugenia capensis subsp. capensis has long been a characteristic feature of the South African coastline. Its resilience to harsh environmental conditions and its edible fruits have made it valuable to coastal indigenous communities. Its role in stabilising dunes is vital for coastal ecosystems. With increasing interest in water-wise and indigenous gardening, it has gained popularity for its adaptability and aesthetic appeal.
Interesting facts:
This plant is a true coastal champion – it loves living right by the sea and can handle strong winds and salty air like a breeze!
Its small, round fruits might look modest, but they're delicious and a favourite snack for hungry birds, making your garden a lively spot!
Even though it's called a "Myrtle," its fruits are more like tiny, tasty cherries, offering a sweet surprise.
It's super tough and helps keep our precious sand dunes from blowing away, playing a vital role in coastal protection!
You can trim it into a perfect hedge or let it grow into a lovely little tree, making it super versatile for your garden.
Growing tips:
Light: Thrives in full sun but can tolerate light shade.
Soil: Prefers well-drained, sandy soils, but is adaptable to a range of soil types. It is excellent for coastal planting in sandy conditions.
Watering: Water regularly, especially during dry periods, until the plant is well-established. Once mature, it is moderately drought-tolerant.
Frost Protection: Young plants may need protection from severe frost. Mature plants are moderately frost hardy but benefit from a sheltered spot in very cold areas.
Propagation: Can be propagated from fresh seeds (clean thoroughly after fruit removal) or from semi-hardwood cuttings.
Growth Rate: Has a moderate growth rate.
Pruning: Responds very well to pruning, making it ideal for shaping as a hedge or maintaining its desired size and form.
Placement: Excellent for coastal gardens, dune stabilisation, hedges, screens, or as a small specimen plant in mixed borders.
This plant is a fantastic alternative for:
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