Ammi visnaga - Commonly called Green Mist Queen Anne's Lace is a feathery and delicate annual with substantial umbels of greenish-white flowers over fine, wispy foliage. Makes an excellent and unusual filler for beds, borders and cut flower displays. Grows to a height of 40in. (100cm) and a spread of 30in. (75cm). Hardy annual. How to grow outdoors: Sow in flowering position. Lightly cover the seed with fine soil. Keep moist. Thin as necessary to approx 12in apart. Remove dead heads to prolong flowering. Flowers: July to September