Paeonia lactiflora 'Sarah Bernhardt' is a classic herbaceous peony grown for its large, full double flowers and rich fragrance. You will get a lush, upright clump of deep green foliage that supports showy blooms in late spring to early summer, and the plant can live for years when left undisturbed.
Give it full sun to part shade. In cooler areas, full sun helps maximize flowering and sturdy growth; in warmer areas, a little afternoon shade can help the blooms last longer. Choose a site with good air movement and avoid planting too close to aggressive roots from nearby trees or shrubs.
Plant in fertile, well-drained soil and keep moisture consistent during establishment. Water deeply when the top inches of soil dry, then let the soil drain; avoid waterlogged spots. Once established, it is more tolerant of brief dry spells, but regular watering during bud set and bloom supports better flowers.
As the season progresses, tall, heavy double blooms may benefit from a discreet support ring to keep stems upright, especially after rain. After flowering, leave foliage in place to feed next year’s buds, then cut stems back after frost. With the right placement and patience, you will be rewarded with dependable spring flowers year after year.