Glandora prostrata

RHS Plant Profile
prostrate purple gromwell

Synonyms

Glandora diffusa misapplied, Lithodora prostrata, Lithospermum prostratum

Alpine Rockery Shrubs

A compact, mat-forming, shrubby evergreen shrub to around 15cm in height, with small, lance-shaped dark green leaves and a creeping habit. Five-petalled, star-shaped bright blue-purple flowers, with a purple stripe down the centre of each petal, appear from spring into summer. Great as part of an alternative hanging basket display of drought-tolerant succulents/alpines in summer

Position

Full sun

Soil Types

Loam, Sand

Max Height

0.1-0.5 metres

Max Spread

0.1-0.5 metres

Size

Time to Maturity
5–10 years
Max Spread
0.1-0.5 metres
Max Height
0.1-0.5 metres

Growing Conditions

Loam Sand
Moisture
Well–drained
pH
Acid or Neutral

Position

Full sun
Aspect
East–facing or South–facing or West–facing
Exposure
Exposed or Sheltered
Hardiness
H5
Drought Resistance
Yes

Colour & Scent

Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family
Boraginaceae
Native to GB/Ireland
No
Foliage
Evergreen
Habit
Matforming
Genus
A genus of flowering, evergreen, shrubby plants from borage family. They are cultivated for their five-lobed, funnel-shaped, blue or white flowers produced in cymes in summer. Leaves are linear, lance-shaped or elliptic, densely hairy
Name Status
Correct

How to Grow

Cultivation

Grow in well-drained, acidic to neutral soil in full sun

Propagation

Propagate by semi-hardwood cuttings

Suggested planting locations and garden types

  • City and courtyard gardens
  • Cottage and informal garden
  • Gravel garden
  • Hanging Basket
  • Mediterranean climate plants
  • Patio and container plants
  • Rock garden
  • Banks and slopes
  • Flower borders and beds
  • Ground cover

Pruning

pruning group 8

Pests

Generally pest-free

Diseases

Generally disease-free