(Inca Series) A hardy, tuberous – clump-forming, upright, herbaceous perennial. Soft, buttery yellow blooms with a distinct brown marking in the throat make this selection the perfect complement to other flower colours in the garden. It forms a good, compact mound of waxy green foliage and short stemmed flowers. Flowering period: June – November. Height 30cm. Spread 30cm. Prefers full sun or partial shade with free-draining soil or compost.To encourage more flowers, rather than cutting off the old ones, pull the whole flowering stem from its bottom away from the plant. Hardiness: H4 ( -10 to -5c).