About
Grevillea rosmarinifolia, the rosemary grevillea, is an evergreen shrub of loose, spreading, graceful habit to 2 m, with rigid, linear, rosemary-like leaves to 5 cm long, often with prickly tips. Deep rose-red flowers in dense terminal clusters are produced from late winter through to late summer � a remarkably long season. A popular and ornamental shrub for a sunny, well-drained, sheltered garden.
About the genus
Grevillea are evergreen shrubs and trees from Australia and the Pacific with alternate, simple or pinnately divided leaves and petal-less flowers in which the colourful calyx tube splits to reveal a protruding style, borne in racemes or panicles. Popular and ornamental plants for mild, sunny gardens.
Growing conditions
SunlightFull sun
Soil typeLoam, Sand
Soil pHAcid, Neutral
Soil moistureWell-drained
AspectWest-facing, East-facing, South-facing
ExposureSheltered
UK hardinessH4
Plant details
Plant typeConservatory Greenhouse, Shrubs
HabitBushy
FoliageEvergreen
Height1.5-2.5 metres
Spread2.5-4 metres
Time to full height10-20 years
Suggested usesCity and courtyard gardens, Coastal, Mediterranean climate plants
Native toSE Australia
ToxicitySkin irritant/allergen. Wear gloves and other protective equipment when handling 8116,grewia-biloba,Grewia biloba,,Grewia biloba is a deciduous or semi-evergreen shrub or small tree from Asia producing the characteristic simple
Care notes
CultivationGrow 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
PruningPruning group 1 outdoors, but more rigorous pruning may be necessary indoors to restrict size
PropagationPropagate by seed, semi-hardwood cuttings or graft
Pest resistanceGenerally pest-free
Disease resistanceMay be susceptible to honey fungus (rarely)