syn. Brassica oleracea var. italica
An annual vegetable with triangular, lobed, grey-green basal leaves and short, sturdy stalks bearing rounded, densely packed, edible heads of crisp, blue- to grey-green florets ready for harvest from early summer into autumn.
Height 75cm (2.5ft), Spread 60cm (2ft), 1-2 years to maturity.