Gladiolus papilio

A terrific tall slender species that always attracts attention with its cryptically coloured nodding flowers. Easy and perfectly hardy around here and, though I've not tried it, probably worth trying to naturalise in rough grass. It can run about a bit underground, popping up here and there so I recommend planting it among herbaceous perennials or low shrubs that are done flowering for the year.
1L pots ~ £7