Bunya Pine


Araucaria bidwillii, also known as the Bunya Pine, is a large evergreen coniferous tree native to the rainforests of southeastern Queensland, Australia.

Tree Height and Spread: Araucaria bidwillii is a slow-growing tree, but it can reach a mature height of up to 50 meters and a spread of up to 15 meters. The tree can take several decades or even centuries to get its full size, so patience is required to grow this species.

Preferred Soil Type: Araucaria bidwillii prefers well-drained soils rich in organic matter. It is adaptable to a wide range of soils, including clay, sand, and loam, but it will perform best in soils that are neutral to slightly acidic in pH. The tree is also relatively drought-tolerant and can grow in areas with limited rainfall.

Soil pH: Araucaria bidwillii is a species that can grow in soils with a pH range of 6.0 to 7.0, but it will do best in slightly acidic soils, with a pH between 6.0 and 6.5. It is essential to keep the soil moist but not waterlogged to maintain the appropriate soil pH.

Light Requirements: Araucaria bidwillii is a tree that prefers full sun to partial shade. While it will tolerate full sun, it will grow best in areas that receive partial shade during the hottest day. This helps to reduce stress on the tree and prevent leaf scorching.

Water Requirements: Araucaria bidwillii is a relatively drought-tolerant tree, but it will do best if it receives regular watering. Keeping the soil moist but not soggy is essential to prevent root rot and other problems associated with poor drainage. During periods of drought, it is necessary to water the tree deeply and regularly to ensure that it receives the water it needs to thrive.

Fertilizer Requirements: Araucaria bidwillii is a tree that is relatively low maintenance in terms of fertilizer requirements. However, it will benefit from applying a balanced, slow-release fertilizer every 2-3 years. This will help to maintain the tree’s health and promote steady growth.

Pruning Requirements: Araucaria bidwillii does not require much pruning, but it may benefit from occasional pruning to maintain its shape and remove any dead or diseased branches. Pruning should be done in the early spring before the tree begins to put out new growth.

Pests and Diseases: Araucaria bidwillii is relatively resistant to pests and diseases, but it can be susceptible to wind and heavy rains damage. It is also vulnerable to fungal infections, such as root rot, if the soil is waterlogged. To prevent these problems, it is crucial to provide good drainage and to avoid over-watering the tree.

Araucaria bidwillii is a large, attractive tree well-suited to many growing conditions. With proper care, it can provide a stunning focal point in the landscape for many years to come. By keeping the soil consistently moist, avoiding over-fertilization, and providing adequate light and water, you can help your bunya tree thrive and reach its full potential.

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