Details G. robusta is a fast-growing evergreen tree to 20m or more, but is usually grown as an annual for foliage effect making a bushy shrub to 3m. In addition, the flowers of many species and cultivars produce nectar and are excellent for attracting birds. Use and Management. And among the Australian native pests and diseases, while some are specific to Australian plant hosts like the grevillea looper caterpillar, many will happily chomp through any plant, refusing to be nationalistic in their tastes. These natives of Australia all contain nectar (except for one or two) and are simply irresistible to our native feathered friends. The specific epithet is derived from the Latin robustus - hard, strong, robust, in reference to the large size of this species in a genus where many species are shrubs. Be cautious with these plants, because many grevilleas cause allergic contact dermatitis and skin irritation, while the fruits and flowers of G. robusta, for example, contain toxic hydrogen cyanide. Practical Plants. Grevillea robusta is a perennial woody evergreen member of the Grevillea genus in the family Proteaceae. Select the thumbnail image or highlighted name for a higher resolution image (21k). Grevillea robusta was described by Alan Cunningham, and the name was published in 1830 in the Supplementum Primum to Robert Brown's Prodromus Florae Novae Hollandiae. booklet is on existing main pests and diseases of commercial plantation trees in Uganda, some examples of external pests and diseases threatening the tree species grown in the country are also presented. Additional information is provided on collecting and sending pest and disease samples for identification. Some do well as bank covers, others as trimmed hedges. Grevillea robusta is a perennial woody evergreen member of the Grevillea genus in the family Proteaceae. For noncommercial purposes only, any Web site may link directly to this page. Genus Grevillea can be evergreen shrubs or trees, with alternate, simple or pinnately divided leaves and petal-less flowers consisting of a colourful calyx tube with protruding style, borne in racemes or panicles . Silk-Oak1 Edward F. Gilman and Dennis G. Watson2 INTRODUCTION Reaching a height of 75 feet or more with a 25-foot spread, Silk-Oak is pyramidal to oval in shape, ... Pests Caterpillars. Diseases Mushroom root rot on poorly-drained soils. Grevillea robusta Figure 1. see more; Family Proteaceae . Pest resistance: resistant to pests/diseases. Devouring your Dianellas? Commonly known as the spider flower the Grevillea genus consists of over 250 species with new hybrids being developed yearly. Grazing on your Grevilleas? Borers and scales are common grevillea pests while overwatering can cause severe damage to plant’s root. Pest resistance: resistant to pests/diseases Use and Management Silk-oak works as a specimen in large, open landscapes but probably should not be located near houses due to their large size, messy habit, and the brittleness of the wood as it ... Bark—Grevillea robusta: Silk-oak Details G. robusta is a fast-growing evergreen tree to 20m or more, but is usually grown as an annual for foliage effect making a bushy shrub to 3m. Grevillea - Cultivation Introduction. Nematodes also provide sites for increased disease infection. Middle-aged Silk-Oak. Plants Wiki; Community; Account Log in; This article has been marked as incomplete and in need of reformatting. Brunching on your Banksias? Please help us to improve it. Tops of trees are known to snap out of the tree in … see more; Family Proteaceae . Crop loss due to pest and diseases varies between 15 and 20%. Silk-oak works as a specimen in large, open landscapes but probably should not be located near houses due to their large size, messy habit, and the brittleness of the wood as it ages. Fact is, many native plants are quite There are many species of Grevillea. 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