Add height and structure to your borders with these superb summer45flowering bulbs undemanding and easy to grow allium 39big impact mixed39 will give you a wonderful assortment of flower shapes sizes and colours that are superb for cut flower displays don39t forget that their attractive and architectural seed heads will also add autumnal interest later in the season height ranges from 60 4590cm 402445363441 spread 15cm 4063441