penstemon 'Purple Bedder'

Grow in fertile, well-drained soil in full sun or partial shade; in autumn, cut plants down to about a third of their height and spread a dry mulch; see penstemon cultivation for more advice

Pruning group 14 (Pruning herbaceous perennials); deadhead to encourage a longer flowering season; in cold areas in autumn, cut plants down to about a third of their height to prevent windrock but leave some protection from frosts; when new growth appears in spring cut out old flower stems

Propagate by softwood cuttings, division, or layering

Generally pest-free

Generally disease-free but may be affected by powdery mildews