QuestionsHow to growFlowersBulbsallium 0 Vote Up Vote Down Ann doyle asked 14 years ago I planted 5 alliums last year and the were lovely when the came up but this year only 1 came up would you have any idea why ? 1 Answers 0 Vote Up Vote Down Gerry Daly Staff answered 7 years ago The flower of allium is large and the bulb is small to make such a large flower and sometimes it takes more than one growing season to do so.