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GREVILLEA rosmarinifolia

Image of Grevillea rosmarinifolia

Michael Charters, www.calflora.net

Family

Proteaceae

Botanical Name

GREVILLEA rosmarinifolia

Plant Common Name

Rosemary-leaved Grevillea

General Description

Delicate flowers and foliage add feminine beauty to this otherwise big, burly shrub for dry, warm climates. Native to New South Wales and Victoria, Australia, rosemary-leaved grevillea thrives in well-drained, slightly acid soils. It has a large stature, upright habit and bears needle-like leaves, much like those of the herb, rosemary. The rich green foliage may become more yellow-green in extreme drought.

This is a winter bloomer, flowering off and on from fall through spring. Blossoms are rich coral red with creamy accents that twist and curl in an exotic way. The oddly shaped blossoms are designed to suit the curved beaks of Australian birds, but in the Americas hummingbirds are drawn to them too.

Rosemary-leaved grevillea is a sun-lover that resists heat, drought and wind everywhere except in hot, low desert climates. To ensure it looks its best, provide occasional deep watering in the high heat of summer. Most grevillia species are notoriously sensitive to soil phosphorous, so beware using fertilizer high in phosphorus and avoid planting specimens near heavily fertilized lawns.

The unique flowers and beautiful arching form of this shrub allow for it to be planted as a single specimen plant, but it can also be used in hedges or for screening. It is tolerant of reflected heat, so it's also a great choice for planting along driveway edges, swimming pools and sunny patios.

Characteristics

  • AHS Heat Zone

    12 - 6

  • USDA Hardiness Zone

    9 - 12

  • Sunset Zone

    8, 9, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24

  • Plant Type

    Shrub

  • Sun Exposure

    Full Sun, Partial Sun

  • Height

    2'-10' / 0.6m - 3.0m

  • Width

    3'-15' / 0.9m - 4.6m

  • Bloom Time

    Spring, Fall, Winter

  • Native To

    Australia

Growing Conditions

  • Soil pH

    Acidic, Neutral

  • Soil Drainage

    Well Drained

  • Soil type

    Loam, Sand

  • Tolerances

    Drought

  • Growth Rate

    Medium

  • Water Requirements

    Xeric/Desert, Drought Tolerant

  • Habit

    Arching/Fountain-shaped

  • Seasonal Interest

    Spring, Summer, Fall, Winter

Ornamental Features

  • Flower Interest

    Showy

  • Flower Color

    Coral, Ivory

  • Flower Color Modifier

    Bicolor

  • Foliage Color (Spring)

    Green

  • Foliage Color (Summer)

    Green

  • Foliage Color (Fall)

    Green

  • Foliage Color (Winter)

    Green

  • Fragrant Flowers

    No

  • Fragrant Fruit

    No

  • Fragrant Foliage

    No

  • Bark or Stem Fragrant

    No

  • Flower Petal Number

    Single

  • Repeat Bloomer

    Yes

  • Showy Fruit

    No

  • Edible Fruit

    No

  • Showy Foliage

    No

  • Foliage Texture

    Fine

  • Foliage Sheen

    Glossy

  • Evergreen

    Yes

  • Showy Bark

    No

Special Characteristics

  • Usage

    Feature Plant, Foundation, Hedges, Mixed Border, Screening / Wind Break

  • Sharp or Has Thorns

    No

  • Invasive

    No

  • Attracts

    Hummingbirds

  • Self-Sowing

    No