Four perennial picks
Luxuriant pale blooms possessing ruffled lilac edges, and rising to 4ft (1.2m) from July to September.
Large flowered sort with generous creamy blooms that are edged in bright pink and have warm, yellow throats. Reaches 36in-4ft (90cm-1.2m).
Spires of rich, satiny magenta-purple flowers rise to 4ft (1.2m). Blends well with soft pink blooms and gold or silvery foliage.
The rich crimson hooded blooms of this G. papilio hybrid will add sophistication to borders. Reaches a height of 30in (75cm).