Gardening 101: Blue Cardinal Flower, A Statuesque Native Perennial for Late Summer

Lobelia siphilitica, Blue Cardinal Flower Blue cardinal flower, also known as great blue lobelia,  is a tall native perennial that blooms for long weeks at the end of summer. Like its striking cousin, the red cardinal flower, this lobelia relishes plenty of water and is happy growing in full-sun rain gardens, bogs, and damp meadows. […]