Add imposing height to your garden borders with our brilliant allium 39big impact mix39 easy to grow this selection will deliver a fantastic mix of sphere shaped allium flowers in an amazing array of colours cut some for a vase indoors or leave them where they stand to enjoy their attractive architectural seed heads later in the season height 90cm 40353441 spread 15cm 4063441 bulb size 184720cmuseful linkshow to plant bulbs corms and tubersculinary informa