Silvery Big Grevillea robusta (also known as Silky Oak and Silver Oak) is a species of flowering plant in the family Proteaceae, endemic to eastern Australia. Growing up to 40 metres (130 ft) tall, it is a large, fast-growing tree with a silvery sheen to its leaves, which are divided into 20-30 small, round, toothed lobes. The flowers are yellow and appear in spring and early summer. The fruit is an oval, woody capsule, containing one or two seeds.
The Silvery Big Grevillea robusta is a large tree that can grow up to 40 metres (130 ft) tall. It is a fast-growing tree with a silvery sheen to its leaves. The leaves are divided into 20-30 small, round, toothed lobes. The flowers are yellow and appear in spring and early summer. The fruit is an oval, woody capsule, containing one or two seeds.
How to care:
Grevilleas are generally easy to grow and care for, and the Silvery Big Grevillea is no exception. They prefer well-drained soil in a sunny position, and will tolerate light frost. They are drought and heat tolerant, and relatively low maintenance. To encourage bushier growth, prune after flowering.
Flowering seasons:
The Silvery Big Grevillea will flower in spring and early summer.
Water requirement:
Grevilleas are generally quite drought tolerant, and the Silvery Big Grevillea is no exception. They prefer well-drained soil, so be sure not to overwater.
Pests and diseases:
Grevilleas are generally quite pest and disease resistant, and the Silvery Big Grevillea is no exception. However, they can be susceptible to scale, mealybugs and aphids.
Propagation:
Grevilleas can be easily propagated from seed or cuttings.
Landscape uses:
The Silvery Big Grevillea is a great tree for use in the landscape. It is fast-growing, drought-tolerant and relatively low-maintenance. It can be used as a specimen tree, or in mass plantings.