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Floating pennywort

(Hydrocotyle ranunculoides)

A non-native invasive plant.

This plant forms dense mats that float across the water surface. It has been sold incorrectly labelled as ‘marsh pennywort’, the common name for Hydrocotyle vulgaris, a native British species that is not invasive. It may also be sold as ‘water pennywort’.

Habitat

Lakes, ponds and other water-based habitats.

What's the problem

Floating pennywort causes a range of problems including changing oxygen availability in the water, threatening fish and invertebrates, choking drainage systems and crowding our native water plants.

What are we doing about it?

Find out more about Plantlife's invasive plant programme by clicking here.