The Common Mouse-ear (Cerastium fontanum) is a perennial herbaceous plant native to the United Kingdom, belonging to the Caryophyllaceae family. It is characterised by its small white flowers and densely hairy leaves, which give it a distinctive appearance.

Common Mouse-ear primarily grows in grasslands, woodlands, and disturbed areas throughout the UK. It prefers well-drained soils and is often found in open woodlands, hedgerows, and along paths and roadsides.

In terms of food requirements, Common Mouse-ear is photosynthetic, utilizing sunlight to produce energy. It can also tolerate a variety of soil types and conditions, making it adaptable to different habitats.

Common Mouse-ear serves as an important food source for various herbivorous insects and small mammals. Its dense foliage provides cover and nesting sites for wildlife, contributing to ecosystem biodiversity.

It typically has a lifespan of one to several years, with individual plants flowering annually during the growing season.

An interesting fact about Common Mouse-ear is its ability to colonise disturbed areas and thrive in environments with low soil fertility. It is often considered a pioneer species, playing a vital role in ecological succession by stabilising soil and preparing the ground for the establishment of other plant species.