Aster x frikartii 'Monch':
Soft lavender blue flowers in late summer. Very early flowering and shorter than many asters at about 80cm. Easy and reliable.
Astilbe 'Amethyst':
Large, upright panicles of lilac-purple flowers in summer over green ferny foliage. Excellent for damp or shady spots. Hardy. Up to 80cm.
[Collect Only]
Astilbe 'Ellie':
Large, upright panicles of white flowers in mid-summer over dark green ferny foliage. Hardy. Up to 80cm.
Hosta 'Frances Williams':
Large heart-shaped crinkled leaves with a prominent green-yellow margin. Lavender purple flowers in mid summer. Hardy. Up to 75cm.
Rudbeckia fulgida var. deamii:
Classic garden perennial flowering in mid-late summer with bright gold daisy flowers with black centres. Hardy. Up to 60cm.