5 seedlings more or less. They are growing low so I don't know if I need to pluck extra seedlings that are growing close to the five.

Description from Bountiful Gardens:
North American rhizomatous perennial to 2’, with spires of pink-to-blue tubular flowers. Tolerates semi-shade. Sow in spring. Medicinal: Prized as the nerve tonic that has the “deepest” action on the nervous system, nourishing the nerves, and calming anxiety. Contains scutellarin, a sedative and antispasmodic.