Cultivar
'Nana'
This compact form of the species has a slow creeping stems that form a low cushion habit that is up to 40 mm (1⅝ in) tall by 200 mm (7¾ in) or more wide. It has spiky divided leaves and producers small clusters of yellow flowers from early to mid summer. 

It prefers an open sunny to partially shaded position and grows in moist to dry well drained moderately fertile stony soils and his ph adaptable. It is planted in small or alpine gardens or used in rockeries as a spill-over. It is deer and rabbit resistant and can tolerate USDA zones 4-9.