Lobelia siphilitica Great Blue Lobelia

Blue lobelia's native habitat is moist areas in part-shade. I frequently find it around creeks or along a damp forest edge.  However, it will grow in full sun if given enough water.

What's better than an (almost) blue flower? Try this clump forming perennial in your garden.

Height: 2 to 3'

Width: 1 to 1.5'

Bloom time: July-Sept