Joe Pye weed (Eutrochium spp.) is a must-have plant for North American native plant and rain gardens. While this tough perennial is a relatively low-maintenance plant, it isn't entirely problem free.

One of the most lovely perennials you could add to such a garden is a swamp milkweed look-alike — sweet Joe-Pye weed (Eutrochium purpureum). This plant blooms with mauve, fragrant flowers from ...