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Wild Arum Arum maculatum 

 
 
Attracts FliesFlies are attracted to this plant
Perennial Life CyclePerennial life cycle
No PetalsNo petals
Green FlowersGreen flowers
1 Petal1 petal
Apr-Jun Flowering
period
Spearhead-Shaped LeavesSpearhead-shaped leaves
Crinkly-Edged LeavesCrinkly-edged leaves
Round StemRound stem
Fibrous RootsFibrous roots
50cmMaximum height
 
 
  Main image of Wild Arum

© 2020-2025 Adrian Briggs

 

Wild Arum is a native perennial plant of the UK, typically found growing in woodland, hedgerows and shady ground, to a mature height of up to 50cm.

The flowering structures of the Wild Arum act as an elaborate 'fly trap' to ensure effective pollination. Wild Arum attracts Owl Midges and other flies for pollination by mimicking the smell and heat generated by rotting plants and dung. The centre of the plant can rise to 15 degrees Celsius above the surrounding temperature. Once attracted, landing flies slip into the base of the flower where they are trapped from escape by downward pointing hairs, and they both pass on and take up pollen. These hairs eventually shrivel, releasing the flies to visit another plant to exchange pollen for pollination.

Botanic classification and naming: Wild Arum is a member of the Arum (Araceae) family. The genus name 'Arum' identifies the plant as a Arum, a plant with tiny flowers borne on a trucheon-like 'spadix', sheathed within a 'spathe' and its species name 'maculatum' means 'spotted (leaves)'.

Concerns: The sap of Wild Arum is poisonous and can cause allergy, skin irritation and damage. It also bears attractive red berries, which are highly toxic to humans.

Benefits: The ripe berries provide a food source for rodents and birds.

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

 

 
Flower of Wild Arum

© 2021 Adrian Briggs

 

Flowers:
Wild Arum usually flowers between April and June.

Flower colour:

Flower Colour Green

Green

Flower shape:

Flower Shape  No petals

No petals

Petals:

Petal Number =  1

1

Leaf of Wild Arum

© 2021 Adrian Briggs

 

Leaves:

Leaf Shape:

Leaf Shape is Spearhead

Spearhead

Or:

Alternative Leaf Shape is Heart

Heart

Leaf Margins:

Leaf Margin is crinkly-edged

crinkly-edged

Stem of Wild Arum

© 2021 Adrian Briggs

 

Stem and Roots:

Stem shape:

Stem Shape is Round

Round

Root type:

Root Type is Fibrous

Fibrous