Salvia uliginosa (Bog Sage)
Salvia uliginosa, also known as Bog Sage, was originally found growing in the bogs and wet places of Argentina, Uruguay, and Brazil. In fact, "uliginosa" means "of swamps and marshes." Bog Sage grows from three to six feet in height in a season and is a fast spreader, as it spreads by underground runners. With infrequent watering, however, it will spread less rapidly and maintain a spread of about four feet; it isn't fussy about growing conditions. The azure blue flowers appear in whorls, each with a white marking at the throat. Bog Sage begins flowering in summer and continues until the days shorten. Full sun (although reputed to be prettiest with some shade) in Zones 6-10. Quarts.