“Phew, what a scorcher!” Remember the summer of 76? It didn't rain between March and September, there were hosepipe bans, and water had to be collected from…
They are fully to frost hardy and will tolerate sun or shade in any well drained soil, but the leaf colour is best on poor soil and in full sun.
Propagation is by division in the spring after flowering.
Pests, diseases or disorders
Dry brown rot, slugs, snails and caterpillars. Vine weevil and leaf spot may be a problem.