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Marsh St John's-Wort Hypericum elodes 

 
 
Attracts BeesBees are attracted to this plant
Attracts FliesFlies are attracted to this plant
Perennial Life CyclePerennial life cycle
Funnel-Shaped FlowersFunnel-shaped flowers
Yellow FlowersYellow flowers
5 Petals5 petals
Jun-Sep Flowering
period
Rounded LeavesRounded leaves
Hairy-Edged LeavesHairy-edged leaves
Round StemRound stem
Fibrous RootsFibrous roots
30cmMaximum height
 
 
  Main image of Marsh St John's-Wort
© 2021 Adrian Briggs
 

Marsh St John's-Wort is a native perennial plant of the UK, typically found growing in marshes, wetlands and water margins, to a mature height of up to 30cm.

Marsh St John's-Wort is named to describe its common wetland habitat and its flowering period, which covers St. John's Day (24th June). It is a fairly short plant and usually grows in shallow water. It has a whitish-green appearance, owing to fine white hairs covering the leaves and stems.

Botanic classification and naming: Marsh St John's-Wort is a member of the St John's-Wort (Hypericaceae) family. The genus name 'Hypericum' identifies the plant as a St John's-Wort and its species name 'elodes' means 'marsh-growing plant'.

Concerns: Marsh St John's Wort is in decline owing to the drainage and loss of wetland habitats.

Benefits: Marsh St John's-Wort attracts bees including the Bumble bees and small flies. It also provides a habitat for aquatic wildlife.

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

 

 
Flower of Marsh St John's-Wort

© 2021 Adrian Briggs

 

Flowers:
Marsh St John's-Wort usually flowers between June and September.

Flower colour:

Flower Colour Yellow

Yellow

Flower shape:

Flower Shape  Funnel

Funnel

Petals:

Petal Number =  5

5

Leaf of Marsh St John's-Wort

© 2021 Adrian Briggs

 

Leaves:

Leaf Shape:

Leaf Shape is Rounded

Rounded

Or:

Alternative Leaf Shape is Delta

Delta

Leaf Margins:

Leaf Margin is hairy

hairy

Stem of Marsh St John's-Wort

© 2021 Adrian Briggs

 

Stem and Roots:

Stem shape:

Stem Shape is Round

Round

Root type:

Root Type is Fibrous

Fibrous