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Blue Field Madder Sherardia arvensis 

 
 
Attracts FliesFlies are attracted to this plant
Annual Life CycleAnnual life cycle
Cross-Shaped FlowersCross-shaped flowers
Lilac FlowersLilac flowers
4 Petals4 petals
May-Sep Flowering
period
Whorled LeavesWhorled leaves
Hairy-Edged LeavesHairy-edged leaves
Square StemSquare stem
Tap RootTap root
40cmMaximum height
 
 
  Main image of Blue Field Madder
© 2021 Adrian Briggs
 

Blue Field Madder is a native annual plant of the UK, typically found growing in cropland, roadsides and waste ground, to a mature height of up to 40cm.

Blue Field Madder is a trailing plant, with whorls of oval-pointed leaves, and looks similar to the bedstraws, which belongs to the same plant family. Despite the name 'Blue', the flowers are actually more of a pale pink to lilac colour. This is reflected in the colour 'Madder Blue', which is not a true blue but more of a lilac-grey, close to the colour of the flower. To add to the confusion, the roots of Blue Madder, like those of Common Madder, can be used to make natural orangey-red dyes.

Botanic classification and naming: Blue Field Madder is a member of the Madder (Rubiaceae) family. The genus name 'Sherardia' identifies the plant as a Field Madder and its species name 'arvensis' means 'field plant'.

 
Flower of Blue Field Madder

© 2021 Adrian Briggs

 

Flowers:
Blue Field Madder usually flowers between May and September.

Flower colour:

Flower Colour Lilac

Lilac

Flower shape:

Flower Shape  Cross

Cross

Petals:

Petal Number =  4

4

Leaf of Blue Field Madder

© 2021 Adrian Briggs

 

Leaves:

Leaf Shape:

Leaf Shape is Whorled

Whorled

Leaf Margins:

Leaf Margin is hairy

hairy

Stem of Blue Field Madder

© 2021 Adrian Briggs

 

Stem and Roots:

Stem shape:

Stem Shape is Square

Square

Root type:

Root Type is Tap

Tap