From May through October, you'll find five-petalled, papery white to pale purple notched flowers floating above the grass. They spread via seeds and stray plant parts.

Butterflies are important pollinators and look beautiful fluttering around your yard. These blue fast-growing flowers are ...

However, if you intend to plant one at home, think about where you plant it. John reckons, "It should come with some government warning, because it could almost destroy your whole house.