A spreading perennial with chartreuse yellow, deeply toothed leaves and racemes of small, rosy pink heart shaped flowers. Photo provided by: De Ree Holland B.V....

An unusual coloured Kniphofia with long slender sword-like leaves and tall stems of two toned dark red flower spikes, fading through burnt orange to creamy white at the bottom. Photo provided by: Young Plants Ltd...

An unusual upright perennial with large, grooved dark green leaves. Orchid shaped white flowers covered in purple spots appear along the flower stem, alternately along the stem, in between each leaf. Photo provided by: Howard Nurseries Ltd...

A beautiful perennial with mounds of small silver leaves, with a maroon blush and deep purple veins. Has short stems of hot pink in the summer. Photo provided by: Terra Nova Nurseries Inc ...

An upright, clump forming perennial with small green leaves flecked with bronze and an incredible number of short flower spikes with lots of small yellow flowers. Photo provided by: Barnes Nurseries...