Black Sheoak (Allocasuarina littoralis)

$19.95

Allocasuarina littoralis, also known as the Black Sheoak, is a species of flowering plant in the Casuarinaceae family. It is native to Australia and is commonly grown as an ornamental tree in gardens, parks and urban landscapes.

Height and Spread: Allocasuarina littoralis can grow up to 30 meters tall, although it is often smaller in cultivation, reaching up to 15 to 20 meters. The tree has a narrow, conical shape and a spread of about 8 meters.

Soil Type: Allocasuarina littoralis prefers well-drained soils, and it is tolerant of a wide range of soils, including sandy, loamy, clay and rocky soils. It can also grow in coastal and saline soils, making it ideal for coastal gardens and landscapes. The tree also adapts to low soil fertility but prefers soils with a neutral pH of 5.0 -7.0.

The ideal pH range for Allocasuarina littoralis is 6.0-7.0, slightly acidic to neutral. The tree is not very demanding in terms of soil pH, and it can grow in soils with a pH range of 5.0-8.0, although it may grow slowly or be more susceptible to nutrient deficiencies if the soil pH is too low.

Watering: Allocasuarina littoralis is drought-tolerant and can withstand drought, but it requires regular watering during the establishment phase and during extended dry periods. Once established, the tree can survive on rainfall alone, but it will grow better with occasional deep watering.

Pruning: Allocasuarina littoralis does not require much pruning and can be left to grow naturally. However, if it is grown for ornamental purposes, it may need occasional pruning to maintain its shape and remove any dead or diseased wood. Pruning should be carried out in late winter or early spring before new growth begins.

Fertilization: Allocasuarina littoralis is not very demanding in terms of fertilization, but it will benefit from applying a balanced, slow-release fertilizer once or twice a year. A balanced NPK-specialised fertilizer for native plants is best.

Allocasuarina littoralis is a hardy and adaptable tree that can grow in various soils and conditions. It is ideal for coastal gardens and landscapes and is relatively low maintenance, requiring only occasional watering and fertilization. With its narrow, conical shape and ability to withstand coastal and saline soils, Allocasuarina littoralis is an excellent choice for gardeners and landscapers looking for an attractive, low-maintenance tree.

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