Tall, vigorous and dazzlingly architectural, this clump-forming perennial produces massive flower heads up to 30cm/12" across of dark-veined cobalt blue flowers from mid summer. These form above the strap-shaped glossy green leaves on top of sturdy upright stems and can last for several weeks before they start to fade. This tall variety makes a big impact when planted in bold swathes or potted up into substantial pots. They will thrive in fertile, well-drained soil with plenty of sun, and are a stunning long-flowering edition to a summer border display.
Sow seeds at any time covering them with compost or grit 5mm deep, in a cool, well-lit spot outdoors. Artificial heat is not needed and can prevent germination. Many species will only germinate in the spring after a good chilling or freezing in the moist seed tray in the winter. Grow on seedlings in small pots before planting out into sharply draining compost in a pot, or the open ground in a well-drained spot.
Packet Content:10+ (Approx)