This pretty plant is a Pink Marshmallow veronica. Veronica is named for St Veronica who comforted Jesus on his path to Calvary.

Pink Marshmallow veronica has bright pink flower spikes from May until July. It grows to about eighteen inches in height and width. Dead-heading will encourage reblooming. Veronica benefits from consistently moist soils during the growing period but cannot tolerate wet soils during dormancy. It is unattractive to both deer and rabbits.