How to Propagate cobaea-flowered penstemon?
Propagate by softwood cuttings in early summer or semi-ripe cuttings in midsummer

cobaea-flowered penstemon · Penstemon cobaea
Also known as: dew flower
Grow in well-drained alkaline to neutral soil in full sun. Ideal for prairie planting and wildlife areas as well as borders
Propagate by softwood cuttings in early summer or semi-ripe cuttings in midsummer