- Deciduous shrub
- USDA hardiness zones:
ëSummer Night (Saunders 1949) is a hybrid tree peony that features large, semi-double, rose and yellow flowers with attractive yellow center stamens. Flowers bloom in spring (May in the St. Louis area). This is a deciduous, woody shrub that typically grows to 3-4 tall and 3-4 wide. Medium green foliage is deeply divided into oval to lance-shaped leaflets. Foliage typically has a bronze hue.
- Full sun to part shade
Best grown in deep, fertile, medium moisture, well-drained soils in full sun to part shade. Tolerant of summer heat. Add compost as needed before planting. Larger shrubs appreciate some shelter from strong winds. Unlike herbaceous peonies, the stems of tree peonies (which are woody plants) do not die to the ground in winter and should not be cut back after frost. No pruning is required, except to cut out dead wood or suckers in early spring. If plants become leggy, a moderate pruning in early fall can be done to shape plant and encourage additional growth on the lower part of the plant. Remove spent flowers after bloom. These long-lived plants usually take several years to establish, and are best left undisturbed once planted. Plant roots go deep and transplanting can be difficult.
Size and growth:
- 3.0 to 4.0 feet
- 3.0 to 4.0 feet
Bloom / flowers:
- Rose and yellow
Showy flowers, Hedge, Fragrant flowers, Yellow, Pink, and Butterflies
Excellent in borders as specimens and in groups. Also effective as accents or hedges along fences, sidewalks, driveways or walls. Flowers are extremely showy, and foliage remains attractive throughout the growing season, either alone or as a frame or backdrop for other flowering plants.
Tree peonies are considered to be relatively pest free. Some susceptibility to canker, Botrytis blight, tip blight, leaf blotch and Verticillium wilt. Ants on peony buds are common and totally harmless. Japanese beetle and scale may appear. Nematodes can be troublesome.