Allium purple sensation invasion

Asked March 20, 2017, 10:48 PM EDT

I planted THREE allium purple sensation bulbs in my flower garden about ten years ago. Now I have THOUSANDS of them all over my garden, and some of them jumped into the lawn too. I realized that the flowers seeded themselves after four or five years later, but it was too late. Every early spring, I tried to pull them out as many as I can, but the bulbs stayed under ground. More and more come out every year. I am afraid that I might have to turn the garden upside down in order to get rid of the bulbs. The trouble is that I have so many perennials, shrubs and roses in the garden. I would desperately like to know if there are better ways to get rid of them. Thanks. Joy

Jefferson County Colorado flowers: annuals and herbaceous perennials

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