Some top leaves have short petioles. During spring, they bloom two-lipped, purple flowers that fade to release seeds in early summer. They're common in disturbed garden soils or mulched tree beds ...

On Molokai, rubber vine escaped cultivation to take over acres of forest in Kamalo. Twenty years later, crews still return to pull up any tiny seedlings and keep this plant under control.

Q: I have nine pots of what I’m pretty sure is purple ... some of the leaves will turn brown and the stems will stretch between leaves, but I predict you’ll have live plants and roots when ...