An unusual perennial with huge hexagonal-shaped green leaves marked with chocolate brown spots. Clusters of dark red star shaped flowers hang beneath the leaves on mature plants in late Spring. Photo provided by: Barnes Nurseries...

A rosette-forming saxifrage with green leaves topped with sprays of fluffy double white flowers in autumn. Photo provided by: Just Must Perennials...

A strong growing variety with grey-green leaves leaves and many spikes of bi-colour blue & white flowers. REBLOOMS if pinched after flowering. Photo provided by: Barnes Nurseries...

A clump-forming perennial with fury foliage that emerge pale yellow and mature to yellow grey-green. Short upright spikes of hooded purplish pink flowers in summer. Photo provided by: Howard Nurseries Ltd...

A beautiful compact variety with wrinkled, softly hairy, mid-green leaves and upright spikes of intense blue-purple flowers from early to mid-summer. Will re-bloom. Photo provided by: De Ree Holland B.V....