Grevillea rosmarinifolia

RHS Plant Profile
rosemary grevillea
rosemary grevillea RHS

Synonyms

Grevillea rosmarinifolia 'Williamsi'
Grevillea 'Williamsii'

Award of Garden Merit
Conservatory Greenhouse Shrubs

An evergreen shrub of loose, spreading, graceful habit, to 2m in mild districts, maybe only to 1m in British gardens. Leaves are rosemary-like, rigid, linear, dark green, to 5cm long and often have prickly tips. Flowers are typically deep rose-red, borne in dense terminal clusters from late winter through to late summer

Position

Full sun

Soil Types

Loam, Sand

Max Height

1.5-2.5 metres

Max Spread

2.5-4 metres

Size

Time to Maturity
10–20 years
Max Spread
2.5-4 metres
Max Height
1.5-2.5 metres

Growing Conditions

Loam Sand
Moisture
Well–drained
pH
Acid or Neutral

Position

Full sun
Aspect
West–facing or East–facing or South–facing
Exposure
Sheltered
Hardiness
H4

Colour & Scent

Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family
Proteaceae
Native to GB/Ireland
No
Foliage
Evergreen
Habit
Bushy
Potentially harmful
Skin irritant/allergen. Wear gloves and other protective equipment when handling Pets: Skin irritant/allergen. For further information and contact numbers regarding pets, see the HTA guide to potentially harmful plants
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
Name Status
Correct
Plant Range
SE Australia

How to Grow

Cultivation

Grow outdoors in acid to neutral well-drained soil. Grow under glass in lime-free compost with added grit in fill light. May need restrictive pruning under glass

Propagation

Propagate by seed, semi-hardwood cuttings or graft

Suggested planting locations and garden types

  • City and courtyard gardens
  • Coastal
  • Mediterranean climate plants
  • Flower borders and beds
  • Wall side borders

Pruning

Pruning group 1 outdoors, but more rigorous pruning may be necessary indoors to restrict size

Pests

Generally pest-free

Diseases

May be susceptible to honey fungus (rarely)