An erect perennial with square stems, winged at the corners, is a delightful presence in late summer to early autumn, adorned with domed clusters of sunny yellow flowers, each measuring up to 1cm across. A British native, Hypericum tetrapterum is a common sight in damp grasslands, embracing its role as a native and bee-friendly perennial. With stout stems showcasing four winged ridges, this medium-height grassland wildflower thrives in fertile damp or wet soils. Its habitat repertoire includes meadows, ditches, marshes, and the verdant banks of ponds and rivers, making it a versatile and attractive addition to various wet-footed landscapes.