Forming neat clumps of heart-shaped, grayish blue leaves about 5in long, 'Hadspen Blue' is a smaller Hosta variety and one of our favorite edging plants for paths through shady gardens. It's a great companion for Dicentra 'King of Hearts' or 'Snowdrift', Jack-in-the-Pulpits (Arisaema), and silvery Japanese Painted Fern (Athyrium niponicum pictum). In late summer, pale mauve blooms appear on 14in stems.