Cynoglossum officinale

RHS Plant Profile
hound's tongue
hound's tongue RHS

Other common names

common dog's tongue, common hound's tongue, dog bur, gypsy flower, rose noble, sheep lice, Tory weed, wood mat, beggar's lice, tafod y ci

Plants for pollinators
Annual Biennial

A softly hairy biennial to about 70cm tall, initially forming a basal rosette of grey-green, elliptic-oblong leaves to 12cm long, and in the second year producing loose clusters of dark purple-red flowers during summer

Position

Full sun, Partial shade

Soil Types

Loam, Sand

Max Height

0.5-1 metres

Max Spread

0.1-0.5 metres

Size

Time to Maturity
1–2 years
Max Spread
0.1-0.5 metres
Max Height
0.5-1 metres

Growing Conditions

Loam Sand
Moisture
Moist but well–drained or Well–drained
pH
Acid or Alkaline or Neutral

Position

Full sun Partial shade
Aspect
South–facing or West–facing or East–facing
Exposure
Exposed or Sheltered
Hardiness
H5

Colour & Scent

Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family
Boraginaceae
Native to GB/Ireland
Yes
Foliage
Deciduous
Habit
Bushy
Genus
Cynoglossum can be annuals, biennials or perennials, usually short-lived, with roughly hairy, simple, lance-shaped to oblong leaves and cymes of blue, purple pink or white, forget-me-not-like flowers from spring to autumn
Name Status
Correct
Plant Range
Europe, W Asia

How to Grow

Cultivation

Grow in moderately fertile, well-drained soil in sun or partial shade. Grows well in dry, gravely ground and on coastal sandy soils

Propagation

Propagate by seed sown in-situ in spring

Suggested planting locations and garden types

  • Coastal
  • Cottage and informal garden
  • Wildflower meadow
  • Wildlife gardens

Pruning

Cut back after flowering

Pests

Generally pest-free

Diseases

May be susceptible to powdery mildews