How to Propagate penstemon 'Midnight'?
Propagate by softwood cuttings in early summer or semi-ripe cuttings in midsummer; propagate by division in spring

penstemon 'Midnight' · Penstemon 'Midnight'
Grow in fertile, well-drained soil in full sun or partial shade. In cold areas, protect plants overwinter with dry winter mulch
Propagate by softwood cuttings in early summer or semi-ripe cuttings in midsummer; propagate by division in spring