Grevillea rosmarinifolia (Rosemary Grevillea)
Botanical Information
| Family | Proteaceae |
| Genus | Grevillea |
| Species | rosmarinifolia |
| Category | Tropicals, Woody |
| Type | Shrub (evergreen) |
| Origin | Native to New South Wales and Victoria, Australia. |
| Pronunciation |
Details
| USDA Hardiness Zone | 9 - 11 |
| USDA Hardiness Ref. | |
| Canadian Hardiness Zone | Requires cold season protection under glass. |
| Canada Hardiness Ref. | |
| RHS Hardiness Zone | H4 |
| RHS Hardiness Ref. | |
| Temperature (°C) | 5 - 10 |
| Temperature (°F) | 20 - 45 |
| Height | 2 m |
| Spread | 3 m |
| Growth | Medium |
Description and Growing Information
| General Description | In order to survive in poor soils Grevillea have evolved with proteoid roots. These roots which develop each season, grow into the top levels of the soil to extract nutrients. |
| Shape | Rounded, 2 m in length and 3 m wide. |
| Propagation | Seed and semi-hardwood cuttings. |
| Cultivation | Full sun to partial-shade, well-drained, acid to neutral soils. Use fertilizers low in phosphorous. |
| Notable Specimens | Trebah Garden Trust, Mawnan Smith, Falmouth, Cornwall, United Kingdom. |
| Habitat | Woodlands, grasslands and rocky slopes. |
| Bark/Stem Description | Mature bark takes on plate-like scales. |
| Flower/Leaf Bud Description | Leaf buds are rounded and 1 - 2 mm in size. Scales are smooth and divided into clusters of 3. |
| Leaf Description | Arranged alternate, opposite or whorled, are compound, dissected, lobed or pinnately toothed. Leaf margins are entire are 25 - 33 mm in size. Leaves are oblong and needle-like, and have silky hairs near the base. |
| Flower Description | Irregular pairs along the branches in clusters. The petals are glabrous on the outside and bearded on the inside. The flowers are tube shaped and curve down and are partially split apart near the end. |
| Fruit Description | Drupe with two winged seeds. The seed is boat-shaped, 15 - 25 mm in size, and when fully mature split open to release seeds. |
| Colour Description | The bark is light greyish-brown when young and more grey in appearance as it matures. The buds are a greyish-silver. The flowers are a fuchsia pink colour. The fruit is light green and becomes brown as it matures. The stock is an olive green colour. The leaves are a greyish-green colour. |
| Texture Description | Young bark is smooth and becomes rough as it matures. The leaves are smooth in texture. The fruit have a hairy texture. |
Photographs
Grevillea rosmarinifolia, form.
Grevillea rosmarinifolia, leaf.
Grevillea rosmarinifolia, form. Trebah Garden Trust, Mawnan Smith, Falmouth, Cornwall, United Kingdom.
Grevillea rosmarinifolia, leaf. Trebah Garden Trust, Mawnan Smith, Falmouth, Cornwall, United Kingdom.
Grevillea rosmarinifolia 'Canberra Gem'.
Awards
