|Fine-textured foliage, long thin flower clusters and drought tolerance make these evergreen shrubs and trees popular. The flowers attract hummingbirds. Naturalized in southern Florida, the Silk-Oak is fast-growing. Hybrids and species abound, though some cannot tolerate salty soils or poor water quality. Choose types that fit your garden conditions. They do not do well near lawns. Well-drained, even rocky, soil is a must. Do not use high-phosphate fertilizers. Prone to leaf-eating insects, scale and mites. Diseases are few.
This fast-growing, fernlike tree flowers in orange. Its leaves have silky hairs underneath.
Attributes - Grevillea robusta
Plant Type: Tree
Bloom Season: Late Spring through Early Summer
Flower Color: Orange
Height: 50 ft. to 100 ft.
Width: 60 ft.
Sunlight: Full Sun
Climate: Zones 8, 9, 10, 11
Notes: Thrives in Hot Climates. Showy Flowers. Susceptible to Mealybugs, Scales.