Hypericum pulchrum, commonly known as Slender St John’s-wort, is a rhizomatous perennial herb native to heathlands, moorlands, and rocky upland regions across Western Europe. It avoids calcareous soils and is often found in acidic environments. This species typically grows 9-18 inches high and features smooth, erect stems with heart-shaped leaves that clasp the stem. The terminal inflorescence boasts rich yellow flowers with conspicuous black and red dots on the margins, blooming in the summer months. The flowers are showy and attract a variety of pollinators.

Slender St John’s-wort is appreciated for its ornamental qualities, including its vibrant flowers and compact growth habit, making it suitable for rock gardens, borders, and wildflower meadows. It is relatively low maintenance, requiring minimal care once established. It prefers full sun to partial shade and thrives in well-drained, acidic soils. While not commonly used in cultivation, it can be a charming addition to naturalistic plantings. It is generally free from serious pests and diseases but can be susceptible to rust. In some areas outside its native range, it can become invasive, so gardeners should monitor its spread.CC BY-SA 4.0