©Lizzie Wilberforce


Enw gwyddonol: Hydrocharis morsus-ranae
Frogbit looks like a mini water-lily as it floats on the surface of ponds, lakes and still waterways. It offers shelter to tadpoles, fish and dragonfly larve.

Species information


Height: 5cm
Spread: 20cm

Statws cadwraethol

Classified as Vulnerable on the Vascular Plant Red Data List for Great Britain.

Pryd i'w gweld

July to August


Frogbit is an attractive aquatic plant that floats on the surface of ponds, lakes and still waterways. Looking like a small water-lily, it is in bloom during July and August. In the winter, it becomes dormant and its buds are buried in the mud at the bottom of the pond. When it grows back, it provides shelter for tadpoles, small fish and dragonfly larvae.

Sut i'w hadnabod

Frogbit has rosettes of small, kidney-shaped leaves that surround a three-petalled, white flower with a yellow centre. The petals look thin and crumpled, and are often tinged with brown underneath.


Found in England and Wales.

Roeddech chi yn gwybod?

Frogbit is native to Europe and parts of Asia, but was introduced into Canada in the 1930s and has become an invasive pest, especially around the Great Lakes of North America which border Canada.

Sut y gall bobl helpu

The Wildlife Trusts manage many wetland nature reserves for the benefit of the wildlife they support. You can help by supporting your local Trust and becoming a member; you'll find out about exciting wildlife news, events on your doorstep and volunteering opportunities, and will be helping local wildlife along the way.