An old-fashioned favorite, tiny Lobelia is cherished by many gardeners for its neon-like, nearly translucent color. No other flower can rival its pure blue color. It self-seeds each year, right in the same pot in which it grew the previous year. Creates nightmares, I'm told, for the guys who do 4-color printing of garden catalogs -- very difficult to reproduce. The color looks correct on screen to my eye, however.