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Houndstongue Cynoglossum officinale 

 
 
Attracts BeesBees are attracted to this plant
Attracts ButterfliesButterflies are attracted to this plant
Biennial Life CycleBiennial life cycle
Cup-Shaped FlowersCup-shaped flowers
Red FlowersRed flowers
5 Petals5 petals
Jun-Aug Flowering
period
Elongated LeavesElongated leaves
Crinkly-Edged LeavesCrinkly-edged leaves
Ribbed StemRibbed stem
Tap RootTap root
90cmMaximum height
 
 
  Main image of Houndstongue
© 2021 Adrian Briggs
 

Houndstongue is a native biennial plant of the UK, typically found growing in dry or chalky grassland and sand dunes, to a mature height of up to 90cm.

Houndstongue gets its name from the rough texture of its leaves, which are densely covered in fine white hairs. The alternative common name 'Rats and Mice' refers to the plant's unpleasant odour. The flowers of Houndstongue are usually deep-red, but may be purple, and have prominent dark veins. Note that both red and purple flowers may be borne in the same flower cluster.

Botanic classification and naming: Houndstongue is a member of the Borage (Boraginaceae) family. The genus name 'Cynoglossum' identifies the plant as a Houndstongue and its species name 'officinale' means 'herbal medicinal plant'.

Concerns: All parts of Houndstongue are toxic, especially to horses and cattle, even when the plant is dried. The plant can also cause contact dermatitis.

Benefits: Houndtongue is mainly pollinated by Bumble bees (or self-pollination).

Benefits to wildlife are also indicated with orange icons in the plant profile bar at the top.

 

 
Flower of Houndstongue

© 2021 Adrian Briggs

 

Flowers:
Houndstongue usually flowers between June and August.

Flower colour:

Flower Colour Red

Red

Flower shape:

Flower Shape  Cup

Cup

Petals:

Petal Number =  5

5

Leaf of Houndstongue

© 2021 Adrian Briggs

 

Leaves:

Leaf Shape:

Leaf Shape is Elongated

Elongated

Leaf Margins:

Leaf Margin is crinkly-edged

crinkly-edged

Stem of Houndstongue

© 2021 Adrian Briggs

 

Stem and Roots:

Stem shape:

Stem Shape is Ribbed

Ribbed

Root type:

Root Type is Tap

Tap