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 very thinly with compost or grit, and leaving some of the seed showing, as light can initiate germination, just as in the wild, and leave in a well-lit, warm spot. Sometimes, artificial heat may not be needed, and may prevent germination, as some species will only germinate in the spring after being chilled in the moist seed tray. Grow on in sharply draining compost in a pot, or the open ground.
Packet Content:10+ (Approx)