Banksia Integrifolia

Taxonomic Information

Description

Banksia Integrifolia, commonly known as the Coastal Banksia, is a species of tree or shrub that is native to Australia. It can grow up to 30 feet tall, but typically ranges from 10 to 20 feet. The Coastal Banksia has rough, gray bark and long, narrow leaves that are dark green on top and silvery-white underneath. Its flowers are a pale yellow and are arranged in cylindrical spikes. The spikes can be up to 8 inches long and 3 inches wide. The Coastal Banksia blooms from autumn to winter and is a valuable source of nectar for birds and insects.

Appearance

The Coastal Banksia is a visually striking plant with its unique leaves and flowers. Its long, narrow leaves are up to 8 inches long and 1 inch wide. They are serrated and have a leathery texture. The leaves are dark green on top and silvery-white underneath, which creates a beautiful contrast when they move in the wind. The Coastal Banksia’s flowers are a pale yellow and are arranged in cylindrical spikes. The spikes can be up to 8 inches long and 3 inches wide. The flowers are followed by woody cones that contain the plant’s seeds.

Care Guide

The Coastal Banksia is a hardy plant that can tolerate a range of conditions, but it thrives in well-drained soil and full sun. Here are some tips for caring for your Coastal Banksia:

• Water: The Coastal Banksia is drought-tolerant, but it needs regular watering during its first few years of growth. Once established, it can go without watering for extended periods of time.
• Fertilization: Fertilize your Coastal Banksia with a low-phosphorus fertilizer in the spring and fall.
• Soil: The Coastal Banksia prefers well-drained soil that is slightly acidic. It does not do well in heavy clay soils.
• Sunlight: The Coastal Banksia needs full sun to thrive. It can tolerate some shade, but it will not bloom as well.
• Hardiness Zones: The Coastal Banksia is hardy in USDA zones 9 to 11.

Common Pests & Diseases

The Coastal Banksia is susceptible to some pests and diseases:

• Leaf spot: This fungal disease causes brown spots on the Coastal Banksia’s leaves. Remove infected leaves and avoid overhead watering.
• Root rot: The Coastal Banksia is susceptible to root rot if it is planted in poorly-drained soil. Avoid overwatering and make sure the soil is well-drained.
• Scale insects: These pests suck the sap from the Coastal Banksia’s leaves and stems. Use an insecticidal soap to control them.

Habitat

The Coastal Banksia is native to the east coast of Australia, from Queensland to Victoria. It grows in a range of habitats, from sandy beaches to rocky cliffs. The plant is well-adapted to coastal conditions and can tolerate salt spray and strong winds.

Question and Answer

Q: Can the Coastal Banksia be grown in a container?

A: Yes, the Coastal Banksia can be grown in a container, but it will require regular watering and fertilization.

Q: How long does it take for a Coastal Banksia to bloom?

A: The Coastal Banksia typically blooms in its second or third year of growth.

Q: Can the Coastal Banksia be propagated from cuttings?

A: Yes, the Coastal Banksia can be propagated from cuttings, but it can be challenging. It is best to take cuttings in the spring or early summer.

Q: Is the Coastal Banksia a fire-resistant plant?

A: No, the Coastal Banksia is not fire-resistant. It is important to clear any dead leaves or debris from around the plant to reduce the risk of fire.

Related Plants

• Banksia serrata
• Banksia ericifolia
• Banksia robur
• Banksia prionotes

References

• Australian Native Plants Society (Australia). (n.d.). Banksia integrifolia. Retrieved from https://anpsa.org.au/b-int.html
• Australian Plants Online. (n.d.). Banksia integrifolia. Retrieved from https://www.australianplantsonline.com.au/banksia-integrifolia-coastal-banksia.html
• Gardening Australia. (2019). Banksia integrifolia. Retrieved from https://www.abc.net.au/gardening/factsheets/banksia-integrifolia/9429694