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Conservatory GreenhouseShrubs

Grevillea johnsonii

Johnson's spider flower

An evergreen shrub to about 2.5m with leaves deeply lobed into narrow, needle-like leaflets. Terminal clusters of pink and red flowers appear in summer

Size
Ultimate height
1.5–2.5 metres
Time to ultimate height
10–20 years
Ultimate spread
1.5–2.5 metres
Growing conditions
Loam
Sand
Moisture
Well–drained
pH
Acid, Neutral
Colour & scent
StemFlowerFoliageFruit
Spring Green
Summer Pink Red Green
Autumn Green
Winter Green
Position
  • Full sun
Aspect

West–facing or South–facing

Exposure
Sheltered
Hardiness
H3
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
E Australia

How to grow

Cultivation

Grow outdoors in very mild areas in acid to neutral, well-drained soil. Grow under glass in lime-free compost with added grit in full light and apply low phosphate, liquid fertiliser monthly when in growth

Propagation

Propagate by semi-hardwood cuttings

Suggested planting locations and garden types
  • Coastal
  • City and courtyard gardens
  • Mediterranean climate plants
  • Wall side borders
  • Flower borders and beds
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)

Get involved

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