Mexican petunia is a bushy, semi-woody tender perennial
that bears no relationship to the petunias we know except for the form of its
flowe Each petunia-like blue blossom
appears only for a day, but bloom is non-stop from May through the heat of
summer until frost. It’s native to South American, the Caribbean, and Mexico
where it’s truly evergreen. It’s often found wild growing by streams or lake s
in full or dappled sun.

In the garden, it prefers moist but well-draine
soil, but mature plants are also surprisingly drought tolerant. Add to that the
fact that it attracts butterflies and has proven disease and pest resistant,
and you can see why it’s become increasingly popular as an annual in the North. Note: In the deep South it’s aggressive, and in
Florida it’s considered invasiv.