What plant is that?

Click on photo below to view larger image

Self Heal plantSelf Heal flower stalk
Self Heal flower headSelf Heal flower
Top left: © Katy Chayka, via Minnesota Wildflowers, https://www.minnesotawildflowers.inf
Top right: Fritzflohrreynolds, CC BY-SA 3.0 <https://creativecommons.org/
licenses/by-sa/3.0>, via Wikimedia Commons
Lower left:© Peter M. Dziuk , via Minnesota Wildflowers,
https://www.minnesotawildflowers.inf
Lower right: Patrick J. Alexander, hosted by the USDA-NRCS PLANTS Database

The mystery plant for March 2021 is a prostate to sub-erect perennial. The spikes are 1 to 2” tall. The leaves are lance to egg-shaped, slightly toothed and long-stalked, up to 3” long. The plant is about 1 foot tall. The calyx is bell-shaped, about 3/8 inch long, green to purple, and sparsely hairy. The petals are blue. The tubular flowers are ½-inch long, and irregular in shape. The upper lip is blue to purple, the lower lip has 3 lobes, the 2 side lobes small and light blue to lavender, the center lobe white to lavender and fringed all around the edges. The stamens are dark and purple-tipped with a white style along the inside of the upper lip. This plant flowers from mid-June to late September. It can be found growing in disturbed areas and waste places.

It’s. . .

Botanical Name:
 
Prunella vulgaris
Common Name:
  Self Heal, Heal-all
Family:
  Lamiaceae (Mint Family)
Habitat:
  Roadsides, woodlands and waste places