A newly released allium, Arctic Snow, puts on quite a show – especially from late spring to early summer. It has white flowers that hover around the centre on top of the stem with vibrant pale green stalks jutting outwards, creating a firework appearance. The heads on these flowers get quite large so plant spaced apart in sunny beds or borders to get the optimal effect. Can also be planted in pots and make an unusual cutting flower. Bees and butterflies love this allium.