This plant has been in my garden for more than 10 years and gave once in a while a flower. This year it is very floriferous and I hope it stays so for the coming years. It grows naturally in Spain where it inhabits sunny and rocky outcrops. It is here completely hardy as long as it is in dry soil. It is of the Leguminosae-family and is very prickly (hence it is for full sun). It has a very slowly spreading habitat but with a heiught of 15 cm. it is a dwarf plant.
Beautiful. Not a plant I am familar with.. so I looked it up. According to The RHS in Britain. Erinacea anthyllis is the correct name, it is syn with Erinacea pungens! http://apps.rhs.org.uk/plantselector/plant?plantid=2901