Banksia integrifolia
Banksia integrifolia
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Banksia integrifolia (Coast Banksia)
Banksia integrifolia, commonly known as Coast Banksia, is a hardy Australian native tree valued for its distinctive flower spikes, attractive foliage, and adaptability to coastal conditions. It is widely used in native landscapes, coastal gardens, and large-scale planting projects.
The plant produces leathery green leaves with silvery-white undersides, creating contrast and texture in the landscape. Large cylindrical flower spikes in pale yellow to golden tones appear mainly from autumn through winter, attracting birds and pollinators.
Key Features
Coast Banksia is known for its exceptional tolerance to wind, salt spray, and poor soils.
Its flowers are highly attractive to nectar-feeding birds and beneficial insects.
It can be grown as a feature tree, screening plant, or pruned hedge.
Growth Habit and Size
This species grows as a medium to large tree with a broad canopy.
It typically reaches 8 to 15 metres in height, though it can be kept smaller with pruning. Spread is approximately 4 to 8 metres. Growth rate is moderate to fast.
Care Requirements
Light
Requires full sun for best growth and flowering.
Watering
Requires regular watering during establishment. Once established, it is drought tolerant.
Avoid excessive watering in poorly drained soils.
Soil
Prefers well-draining soil but adapts to sandy, coastal, and poor soils.
Temperature and Climate
Suitable for temperate to coastal climates. Tolerates wind, salt spray, heat, and light frost.
Maintenance
Low maintenance. Prune lightly if shaping or size control is required.
Avoid high-phosphorus fertilisers.
Use low-phosphorus native fertiliser if needed.
Common Issues
Poor drainage may lead to root issues.
Sensitive to excessive phosphorus.
Can become large if not managed.
Applications
Banksia integrifolia is suitable for:
Coastal gardens
Feature tree planting
Native landscapes
Windbreaks and screening
Wildlife gardens
Large-scale planting projects
Its flowers and foliage provide year-round interest.
Specification and Care Chart
| Attribute | Details |
|---|---|
| Botanical Name | Banksia integrifolia |
| Common Name | Coast Banksia |
| Plant Type | Evergreen native tree |
| Mature Height | 8 m to 15 m |
| Growth Habit | Upright, spreading canopy |
| Growth Rate | Moderate to fast |
| Light Conditions | Full sun |
| Direct Sunlight | Required |
| Watering Frequency | Low once established |
| Soil Type | Well-draining, sandy or poor soils |
| Drainage Requirement | Essential |
| Temperature Range | Temperate to coastal |
| Frost Tolerance | Light frost |
| Drought Tolerance | High |
| Maintenance Level | Low |
| Fertiliser | Low-phosphorus native fertiliser |
| Toxicity | Not commonly regarded as toxic |
FAQ – Banksia integrifolia
Is it suitable for coastal gardens?
Yes, it is highly tolerant of wind and salt spray.
Does it attract birds?
Yes, the flowers attract nectar-feeding birds.
Can it be pruned?
Yes, it responds well to pruning and shaping.
Does it need full sun?
Yes, full sun is essential for best growth.
Is it drought tolerant?
Yes, highly drought tolerant once established.
How big does it grow?
Typically reaches 8 to 15 metres in height.
