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Welted Thistle Carduus crispus 

 
 
Attracts BeesBees are attracted to this plant
Attracts ButterfliesButterflies are attracted to this plant
Attracts HoverfliesHoverflies are attracted to this plant
Attracts BirdsBirds are attracted to this plant
Biennial Life CycleBiennial life cycle
Daisy-Like FlowersDaisy-like flowers
Purple FlowersPurple flowers
Many PetalsMany petals
Jun-Sep Flowering
period
Lobed LeavesLobed leaves
Spiny-Edged LeavesSpiny-edged leaves
Ribbed StemRibbed stem
Tap RootTap root
200cmMaximum height
 
 
  Main image of Welted Thistle
© 2021 Adrian Briggs
 

Welted Thistle is a native biennial plant of the UK, typically found growing in woodland margins, grassland and waste ground, to a mature height of up to 200cm.

The Welted Thistle is so called because it has characteristic green spiny ridges extending along its stems. It has flowerheads that are similar to the Spear Thistle (spherical and spiky, topped with a wide plume of purple ray petals) but the leaves are very dissimilar, having more complex lobing and much less pronounced spikes.

Botanic classification and naming: Welted Thistle is a member of the Daisy (Asteraceae) family. The genus name 'Carduus' identifies the plant as a Plumeless Thistle and its species name 'crispus' means 'crisp plant'.

Benefits: The seeds of the Welted Thistle provide a food source for birds.

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

 

 
Flower of Welted Thistle

© 2021 Adrian Briggs

 

Flowers:
Welted Thistle usually flowers between June and September.

Flower colour:

Flower Colour Purple

Purple

Flower shape:

Flower Shape  Daisy-like

Daisy-like

Petals:

Petal Number =  Many

Many

Leaf of Welted Thistle

© 2021 Adrian Briggs

 

Leaves:

Leaf Shape:

Leaf Shape is Lobed

Lobed

Leaf Margins:

Leaf Margin is spiny

spiny

Stem of Welted Thistle

© 2021 Adrian Briggs

 

Stem and Roots:

Stem shape:

Stem Shape is Ribbed

Ribbed

Root type:

Root Type is Tap

Tap