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Herbaceous PerennialAlpine Rockery

Scutellaria diffusa

A mat-forming perennial to a height of 8cm with small hairy grey-green leaves. The flowers are blue-purple in colour and held in clusters over the foliage in summer

Size
Ultimate height
Up to 10cm
Time to ultimate height
2–5 years
Ultimate spread
0.1–0.5 metres
Growing conditions
Loam
Sand
Chalk
Moisture
Well–drained
pH
Neutral, Alkaline, Acid
Colour & scent
StemFlowerFoliageFruit
Spring Green Grey Silver
Summer Blue Purple Green Grey Silver
Autumn Green Grey Silver
Winter
Position
  • Full sun
  • Partial shade
Aspect

West–facing or South–facing

Exposure
Exposed or Sheltered
Drought resistance
Yes
Hardiness
H6
Botanical details
Family
Lamiaceae
Native to the UK
No
Foliage
Evergreen
Habit
Matforming, Spreading branched, Clump forming
Genus

Scutellaria are annuals, herbaceous perennials or sub-shrubs with opposite pairs of leaves and blue, violet, yellow or white, two-lipped, tubular flowers borne in the leaf axils or in terminal spikes

Name status

Unresolved

How to grow

Cultivation

Grow in a rock garden, scree bed, or alpine house in a gritty compost in sun or dappled shade. Avoid winter wet

Propagation

Propagate by division of clumps in spring or by basal cuttings in late spring to early summer

Suggested planting locations and garden types
  • City and courtyard gardens
  • Cottage and informal garden
  • Gravel garden
  • Mediterranean climate plants
  • Patio and container plants
  • Rock garden
  • Wildlife gardens
  • Low Maintenance
  • Ground cover
Pruning

No pruning required

Pests

May be susceptible to aphids

Diseases

Generally disease-free

Get involved

The Royal Horticultural Society is the UK’s leading gardening charity. We aim to enrich everyone’s life through plants, and make the UK a greener and more beautiful place.