Wild Hyssop: Simpler's Joy.

Verbena hastata. Vervain Family. July - Sept.

A plant 3 - 7 feet high, found in fields, waste places, along roadsides. Common in the United States and Canada.

Flowers

Purple or violet, small, 5-lobed, blossoming in circles from the base of the flower spikes upward.

Leaves

Opposite, stemmed, lance-shaped, toothed, rough; lower leaves more or less lobed.

Blue Vervain.