We are often asked for good Hostas without variagation as many planting schemes need the clean look of these types. Here's one we would recommend. A sport of H. 'Lakeside Little Tuft', its green foliage is lance shaped and slightly corrugated. Medium lavender, bell-shape flowers bloom from July into August.
Foliage height to 30cm, flower height to 45cm.
Plant in partial shade in moisture retentive but well drained soil

Hosta 'Green Bag' 9cm €5.95