Resources
for Botanical Studies in the Washington, D.C., Region
When?
Summer flowers (June – September)
Native plants, outdoors (Blue Vervain,
Cardinal Flower,
Great Blue Lobelia, Jewelweeds, Wingstem, etc.)
Alien plants, outdoors (Butterflybushes, Cannas, Dahlias, Daylilies, Impatiens, Marigolds, Zinnias, etc.)