Eucalyptus aggregata
Eucalyptus aggregata
Eucalyptus aggregata
Eucalyptus aggregata
Black gum
Received a very beautiful plant, well rooted, with healthy and shiny leaves. Started growing immediately after planting. I am also very satisfied with the wide variety of eucalyptus and the low shipping costs to Belgium. Superb!
dirk, 05/06/2024
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Description
Eucalyptus aggregata or Black Gum (not to be confused with the Nyssa sylvatica), is a species native to Australia. It belongs to the family of swamp gums. It is a tree with a beautiful shape and an open and spreading crown that casts a light shadow. Its silhouette is elegant and graceful. The arching branches bear dense foliage in clusters of lanceolate, matte or satin green leaves. Its bark is very rough and deeply wrinkled. Its beautiful white pompon flowers are often seen during winter. It grows well in ordinary, heavy, clayey or limestone, moist soil, always in the sun. It is robust and hardy down to about -15°C (5 °F).
Eucalyptus aggregata is an endemic species of southeastern Australia, New South Wales, and Victoria, excluding Tasmania. Like all Eucalyptus, it belongs to the myrtle family. Its growth rate is moderate for a Eucalyptus, around 1m (3 ft 4 in) to 1.5m (4 ft 11 in) per year. It eventually forms an elegant tree with a rounded crown measuring about 15m (49 ft 2 in) in height, not more than 20m (65 ft 7 in), with a spread of 8m, depending on the growing conditions. Its bark is brown and rough. The juvenile leaves are bronze and then turn dark green. The adult leaves are pendulous, larger, thinner, and thicker, and lanceolate in shape, measuring up to 13cm (5.1 in). They have a dull, matte, or satin green colour. When crushed, the foliage emits a typical Eucalyptus scent. Flowering occurs from November to May, depending on the climate and the year, typically in February-March. The flowers are grouped in clusters of 3 at the axil of the leaves. This eucalyptus has a lignotuber just below the surface of the soil. This organ allows it to regrow from the stump in case of severe frost, fire, or hard pruning. The plant also produces numerous shoots from dormant buds located under its bark, which allows it to respond very well to coppicing and pollarding.
Eucalyptus aggregata is a beautiful tree to plant in isolation. It brings an elegant and poetic touch to the garden and provides good firewood. If necessary, it can be planted in marshy soil for drainage purposes. It is easy to maintain and can be easily contained through pruning. Finally, it is an ornamental plant at all stages of its growth, both as a young plant and as an adult. It is undemanding in terms of soil, tolerating clay and some limestone.
Eucalyptus aggregata in pictures
Plant habit
Flowering
Foliage
Planting and care
Eucalyptus aggregata is best planted in early autumn or early spring, in well-prepared soil, not too dry but moist, and in a very sunny location. Clay or loamy soils, even limestone, are well tolerated. However, this species does not like very hot summers and arid soils. Water well at planting, then regularly during the first year, especially in dry weather and if the summer is dry and hot. Then let nature take its course, the growth is very rapid. No need to prune, but the plant tolerates pruning very well after 3 or 4 years of cultivation.
This eucalyptus loves moist and deep soils, near ditches or compost piles. Its roots are less powerful than those of other species, allowing it to be installed closer to foundations and installations (septic tank, for example).
Planting period
Intended location
Care
Planting & care advice
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Hardiness is the lowest winter temperature a plant can endure without suffering serious damage or even dying. However, hardiness is affected by location (a sheltered area, such as a patio), protection (winter cover) and soil type (hardiness is improved by well-drained soil).
In temperate climates, pruning of spring-flowering shrubs (forsythia, spireas, etc.) should be done just after flowering.
Pruning of summer-flowering shrubs (Indian Lilac, Perovskia, etc.) can be done in winter or spring.
In cold regions as well as with frost-sensitive plants, avoid pruning too early when severe frosts may still occur.
The harvesting period indicated on our website applies to countries and regions in USDA zone 8 (France, England, Ireland, the Netherlands).
In colder areas (Scandinavia, Poland, Austria...) fruit and vegetable harvests are likely to be delayed by 3-4 weeks.
In warmer areas (Italy, Spain, Greece, etc.), harvesting will probably take place earlier, depending on weather conditions.
The sowing periods indicated on our website apply to countries and regions within USDA Zone 8 (France, UK, Ireland, Netherlands).
In colder areas (Scandinavia, Poland, Austria...), delay any outdoor sowing by 3-4 weeks, or sow under glass.
In warmer climes (Italy, Spain, Greece, etc.), bring outdoor sowing forward by a few weeks.
The planting period indicated on our website applies to regions in USDA Zone 9a (East Coast and Midlands: Dublin, Wexford, Waterford, Kilkenny, Portlaoise). It will vary depending on where you live:
- On the west coast and in the north-west (Galway, Limerick, Sligo, Donegal, Westport), delay planting by 1 to 2 weeks in spring and bring it forward by 1 to 2 weeks in autumn compared to the dates given, preferably choosing periods without strong winds.
- In the inland hills and plateaus (Wicklow Mountains, Macgillycuddy’s Reeks, Connemara, Killarney), it is best to plant in spring (April–May) or autumn (September–October), avoiding periods of waterlogged soil in winter and strong winds, which pose the main risk to newly planted trees in these areas.
The flowering period indicated on our website applies to regions in USDA Zone 9a, such as the East Coast and Midlands, including Dublin, Wexford, Waterford, Kilkenny and Portlaoise.
This will vary depending on where you live:
- On the west coast and in the northwest (Galway, Limerick, Sligo, Donegal and Westport), it will be delayed by one to two weeks compared to the given dates, due to stronger Atlantic winds and less spring sunshine.
- In the inland hills and plateaus (the Wicklow Mountains, the Macgillycuddy's Reeks, Connemara and Killarney), flowering will be delayed by two to three weeks. Flowering mainly occurs between May and July, with the limiting factors being less frost and more of the excessive humidity, strong winds and lack of sunshine that are characteristic of these areas.
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