Flowering period: July and August Hardiness: fully hardy
This tough hosta has huge, corrugated yellow-green leaves that seem to ward off slugs and snails. Spikes of pale lilac flowers appear in July. This plaintain lily makes a bold statement in a large container in a shady courtyard. In a border, it looks stunning close to an entrance or path, or among other plants with distinctive foliage, such as ferns. Although it will cope with some sun, the leaves are best shaded from the midday sun and sheltered from cold, drying winds. Once established, its layers of leaves will suppress weeds, too.