Paeonia suffruticosa ‘Yu Ban Bai’ produces 6.5-inch, snow white, upward-facing, moderately fragrant flowers on a medium-sized woody shrub. Tree peonies prefer to be grown in full sun to partial shade in well-drained, moisture-retentive soils that are mulched in summer to preserve soil moisture and lower the soil temperatures during periods of hot weather. They are not bothered by most pests and diseases. They dislike transplanting so try to select a planting site that will accommodate the plant as it matures (up to 3.5 feet tall by 4 feet wide). The tree canopies that produce the partial shade partially protect the delicate flowers from late spring frosts. 'Yu Ban Bai' is a very old cultivar, perhaps dating back as early as the seventh century. Chinese emperors prized plants of this species as much for their red roots as for their elegant flowers.