Herbaceous

Biennial with cerise pink flowers borne freely on wiry stems

Clear salmon-pink

Crimson centred purple-pink flowers on flowering stems with purple hairs

White centred purple-black, maroon or violet-blue flowers

Pure white

Dark purple foliage which holds its colour well right through the summer especially if grown in full sun. Fully hardy and easy to grow. Masses of lavender flowers

Pastel lilac

Silvery foliage, white flowers, veined violet

Sharp toothed leaves and deep magenta flowers over a long period

RHS PLANT OF THE CENTENARY. This tall growing variety has a very long flowering season. Upward facing blue flowers with paler centres

Magenta red

White flowers over many weeks

Shell-pink flowers with darker veining

Compact habit. Sky blue flowers have white centres

(corsicus) - evergreen foliage and lime-green flowers

Striking lime-green flowers

White flowers

Ranges from white to pink and purple flowers with crimson spots

Blue or dark purple flowers

Pinkish flowers

Round, mainly upright red flowers

Pure white, unspotted

Upright yellow flowers with red spotting inside the petals

Creamy green flowers tinted pink, leaves with pinkish purple stalks and main veins

Dark red with gold midribs

Orange-yellow with brown spots

Rosy-pink

Brown-red

Good yellow

Dull purple flowers 2 feet in height