Himalayan cowslip. Flowering mid summer through to the autumn. Normal colour is sulphur yellow bell shaped flowers, however they can range from a dull orange (keilour hybrids), through to brick red ('red shades'). Fragrant flowers.
Needs cool moist and free draining neutral to acidic soil, which does not dry out in summer, or get waterlogged for long periods in winter.
Candelabra primula. Flowering June through to July. Flower colour range from oranges through to purples, pinks and reds.
White veined pink cherry-blossom thrum with dark pink reverse to petals. An American cultivar, which we find difficult to bulk up.
Spreading evergreen perennial. Pink flowers over fresh red-hued leaves in early spring. Plant in light shade, away from summer drought and winter waterlogging, but water in well in its first year.
(x-rubrum) Spreading evergreen perennial. Red and lemon flowers over fresh red-hued leaves in early spring. Plant in light shade, away from summer drought and winter waterlogging, but water in well in its first year. (photograph courtesy of Danielle Monbaliu)
Also: E. wushanense Spiny Leaves. Rare Chinese Epimedium wushanense introduced in 2006 by Darrell Probst; and named by Plant Delights Nursery in USA. Low growing cultivar.