Do bluebells spread?
Similarly one may ask, do bluebells multiply?
Although the native English bluebell and the larger Spanish bluebell are often grown in gardens, they can multiply and become a nuisance, requiring control. Spanish bluebells can also hybridise with the native form so are best controlled in gardens close to woodlands where the English bluebell is growing.
Also to know is, are bluebells invasive?
Like Japanese knotweed, bluebells are sometimes considered to be an invasive species where I live. There may be nothing inherently bad about a specific invasive plant. When it's outside of its native habitat, however, it may grow or spread rapidly and cause environmental or economic problems.
Virginia bluebells are excellent interplanted with other blue-flowering plants such as perennial woodland phlox (Phlox divaricata). Virginia bluebells spread readily by seed, moving outward from an original planting at a speed of a foot or two a year.