Loiseleur's whitlow-grass

Loiseleur's whitlow-grass (lat. Draba loiseleurii) is a perennial herbaceous plant belonging to the Brassicaceae family. It is recognized primarily as a specialized alpine cushion plant, highly valued for its compact growth habit and suitability for high-altitude ecological conditions.

Native to the mountains of Corsica, this species is naturally adapted to harsh, rocky environments. Its range of cultivation is largely restricted to specialized botanical collections and alpine gardens that provide the necessary mineral-rich, stony soil structures it requires to thrive.

Botanically, the plant is characterized by small, dense rosettes of hairy, narrow leaves. During the spring, it produces short scapes topped with clusters of bright yellow flowers. Its root system is adapted to penetrate deep into rock crevices, allowing the plant to withstand extreme winds and seasonal droughts.

Regarding climate and soil, it requires excellent drainage and a poor, gritty soil mix. In cultivation, one must avoid organic-rich soil that retains moisture, as this leads to root rot. High solar exposure is mandatory for healthy development, mimicking the light conditions of its natural rocky habitat.

Agricultural use is limited to the ornamental sector as a collector's species. Common diseases often include fungal infections triggered by excessive soil moisture, while common pests include crucifer flea beetles. Successful maintenance relies on a strict irrigation regime that keeps the crown of the plant dry at all times.