Grevillea Aquifolium

Description

Grevillea Aquifolium, also known as Holly-leaved Grevillea or Holly Grevillea, is a small evergreen shrub native to Australia. It belongs to the Proteaceae family, which includes other popular ornamental plants like banksias and waratahs. The plant is characterized by its shiny, dark-green, spiky leaves and showy clusters of red flowers, which bloom from mid-winter to spring. The flowers are rich in nectar, making them attractive to birds and other pollinators.

Taxonomic Information

Appearance

Grevillea Aquifolium is a compact shrub that typically grows up to 6 feet tall and wide. Its leaves are glossy, dark green, and sharply pointed, resembling those of holly plants. The flowers are arranged in terminal clusters, with each cluster containing up to 20 individual flowers. The flowers are tubular in shape, about 2 inches long, and have four petals that are fused together at the base. They are bright red in color and appear from mid-winter to spring. The plant produces small, woody fruits that contain one or two seeds each.

Care Guide

Grevillea Aquifolium is a hardy plant that requires minimal care once established. Here are some important tips to keep in mind:

• Water: The plant prefers well-draining soil and moderate watering. Avoid overwatering, as this can lead to root rot.
• Fertilization: Fertilize the plant with a slow-release fertilizer in spring and fall.
• Soil: The plant prefers acidic to neutral soil with a pH range of 5.5 to 7.0.
• Sunlight: The plant prefers full sun to partial shade. It can tolerate some shade but may produce fewer flowers.
• Hardiness Zones: Grevillea Aquifolium is hardy to USDA zones 8 to 10.

Common Pests & Diseases

Grevillea Aquifolium is relatively pest and disease-resistant but may occasionally be affected by the following:

• Aphids: These small insects can suck the sap from the leaves, causing them to curl or distort. Use insecticidal soap or neem oil to control them.
• Spider mites: These tiny pests can cause yellowing or stippling of the leaves. Use insecticidal soap or neem oil to control them.
• Root rot: Overwatering or poorly draining soil can lead to root rot, which can cause the plant to wilt or die. Improve drainage and reduce watering to prevent this.

Habitat

Grevillea Aquifolium is native to southeastern Australia, where it grows in a range of habitats, including woodlands, heathlands, and coastal scrubs. The plant is adapted to a Mediterranean climate, with hot, dry summers and cool, wet winters. It can tolerate drought and frost but may need protection in colder climates.

Question and Answer

Q: Is Grevillea Aquifolium a good plant for attracting birds?

A: Yes, Grevillea Aquifolium is a great plant for attracting birds, especially honeyeaters, which feed on the nectar-rich flowers.

Q: Can Grevillea Aquifolium be grown in a container?

A: Yes, Grevillea Aquifolium can be grown in a container, but it may require more frequent watering and fertilization than plants grown in the ground.

Q: How often should I prune Grevillea Aquifolium?

A: Prune the plant after flowering to maintain its shape and promote bushier growth. Avoid pruning too heavily, as this can reduce flowering.

Q: Can Grevillea Aquifolium be used as a hedge plant?

A: Yes, Grevillea Aquifolium can be used as a hedge plant, but it may require more frequent pruning than other hedge plants due to its slower growth rate.

Related Plants

• Grevillea lanigera (Woolly Grevillea)
• Grevillea juniperina (Prickly Grevillea)
• Grevillea rosmarinifolia (Rosemary Grevillea)

References

• “Grevillea Aquifolium.” Australian Plants Online, https://www.australianplantsonline.com.au/grevillea-aquifolium-holly-leafed-grevillea.html.
• “Grevillea Aquifolium.” PlantNet, https://plantnet.rbgsyd.nsw.gov.au/cgi-bin/NSWfl.pl?page=nswfl&lvl=sp&name=Grevillea~aquifolium.
• “Grevillea Aquifolium.” Royal Horticultural Society, https://www.rhs.org.uk/plants/225120/grevillea-aquifolium/details.