penstemon 'Windsor Red' · Pruning

Grow in fertile, moist but well-drained soil in full sun or light shade in a position sheltered from frosts and drying winds; in autumn, cut plants down by two-thirds of their height and protect with a dry mulch; for more advice, see penstemon cultivation

Watering: Deep soak when top layer dries, tolerates brief dry spellsSunlight: Full sun · Partial shadeInformation to be completed

Deadhead to encourage a longer flowering season; in autumn, cut plants down to about a third of their height to prevent windrock but leave some protection from frosts; in late spring or early summer after new growth appears and after frosts are over, cut out old stems

How to Prune penstemon 'Windsor Red'?