Plant Base Online (beta)
poisonous or irritant
full sun, part shade
moist soil, sandy soil
preferred soil pH: neutral
minimum temp: -5°C
USDA zone: 9 to 9
Almost evergreen bulbous perennial, with the new lance-shaped leaves developing in autumn as the old ones die back. In early summer produces conical heads of many purplish-blue flowers, opening first around the base of the flowerhead.
Plant bulbs in late summer or early autumn, about 8 to 10cm deep. Reasonably fertile, preferably humus-rich, well-drained soil in full sun or part shade.
By division of bulb offsets or from seed.
From Portugal, Spian, Italy and North Africa