Lobelia are perfect for the spot in your garden that just stays too wet for most plants. Spires of colorful hood-like flowers open from bottom to top. Will naturalize along ditches and streams. Butterflies like them too.
Prefers fertile, evenly moist soil. Can be divided every 2 - 3 years in spring. Allow to self sow. Winter over with stems on. Can be pinched back before flowering to produce more compact plants. May benefit from light winter mulch north of zone 6.