This month’s Garden Flowers post, which I write with garden designer Lisa Cox, features penstemon.

This popular flowering plant grows best in full sun but is also very happy in light shade, and blooms in your garden from mid-late summer and often into October.

Colours range from blue to pale pink, and white to deep purple. So there’s sure to be a colour to suit any planting scheme.

Penstemon ‘Garnet’, which is pictured below, is one of the best performers. Its deep pink flowers continue for months and eventually it matures into a large bushy clump.… Read more