Heliopsis helianthoides var. scabra

Cobalt blue flowers that resemble butterflies emerge in summer and last all the way into autumn. The plants can cope with light frosts but might need extra protection during extreme cold temperatures. Cut back in late summer to encourage a second flush in autumn and then trim the following year in spring to strenghten new growth.

This salvia shows velvety purple and plum coloured blooms from spring to autumn and sometimes even until the first frosts. Grown in ideal conditions in well-draining soil and full sun or partial shade it will keep its foliage in mild winters and can tolerate very low temperatures with some winter protection. Plant in a patio container or near seating areas to enjoy the minty-blackcurrant scent from the foliage.

This clump-forming perennial with grey-green leaves bears small nodding red flowers from early summer that turn into extraordinary feathery seedheads. The foliage turns red in autumn which add interest later in the season. Geum Triflorum grows well in dry, free-draining soil and is drought-tolerant once established.