Three-nerved Sandwort (Moehringia trinervia) is a small, perennial herbaceous plant native to the United Kingdom, belonging to the Caryophyllaceae family. It is commonly found in dry, rocky habitats, including limestone grasslands, cliffs, heathlands, and sand dunes, across the UK.

Three-nerved Sandwort thrives in well-drained, nutrient-poor soils, often favouring sunny to partially shaded habitats. It can tolerate a wide range of soil types, including sandy, loamy, and gravelly soils, making it adaptable to different environmental conditions.

Predators of Three-nerved Sandwort include herbivores such as grazing mammals and insects, which may feed on its foliage. However, its small size and inconspicuous flowers often provide some protection from extensive browsing.

As a perennial plant, Three-nerved Sandwort can live for several years, forming low-growing mats of slender stems and producing clusters of tiny white flowers in spring to early summer. It reproduces via seeds, which are dispersed by wind or animals.

Culturally, Three-nerved Sandwort does not hold significant symbolic or traditional references in the UK. However, it is valued for its role in stabilising soils, preventing erosion, and providing habitat for various species of insects, including butterflies and bees.

An interesting fact about Three-nerved Sandwort is its ability to thrive in harsh, nutrient-poor environments. It is often one of the first plants to colonise disturbed or barren areas, helping to initiate the process of ecological succession and paving the way for the establishment of other plant species.