Water:
Penstemon thrives in moderate moisture, tolerating short dry spells but prefers balanced watering. For optimal growth, water penstemon weekly, especially during its blooming season to maximize flowering potential.
Propagation:
Penstemon can be propagated via seed sowing, softwood cuttings, or division, requiring bright, indirect light, moderate temperatures, and well-draining soil. Cuttings involve selecting a stem, applying rooting hormone, and maintaining humidity. Seeds need light and moisture, with stratification for spring sowing.