How to Water penstemon 'Precious Gem'?
Moderate regular watering, avoid prolonged drought and stagnant waterlogging

penstemon 'Precious Gem' · Penstemon 'Precious Gem'
Penstemon cultivation in fertile, well-drained soil in full sun or partial shade. In cold areas, protect plant overwinter with a dry winter mulch
Moderate regular watering, avoid prolonged drought and stagnant waterlogging