Chinese peony
Also known as
Garden peony, Milkflower peony, Lactiflora peony
Keep this plant’s care guide close at hand.
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Paeonia lactiflora, the Chinese peony, is a long-lived herbaceous perennial valued for its lavish, often fragrant late spring to early summer blooms. Plants form dense clumps 60–90 cm tall with glossy, deeply divided foliage emerging reddish in spring and maturing dark green. Flowers range from single to fully double forms in white, pink, red, and bicolors, borne on sturdy but sometimes top-heavy stems that benefit from discreet support. Thick, tuberous roots store energy, allowing plants to live and flower for decades with minimal disturbance. This species requires a period of winter chill to set buds and thrives in cool to temperate climates with well-drained, fertile soil. Good air circulation and sanitation help prevent botrytis, a common peony ailment. Once established, it is drought-tolerant, deer-resistant, and low-maintenance, provided it receives ample sun and is planted at the correct depth.
Taxonomy
Properties & Requirements
How to care for Chinese peony
Water
Water deeply rather than often. Provide about 2.5 cm (1 in) of water weekly during spring growth, bud formation, and the six weeks after bloom, when next year’s buds are initiated. Soak the root zone to 20–30 cm depth, then allow the top few centimeters to dry before watering again. Mulch 5–7 cm to conserve moisture, keeping mulch off the crown. Reduce watering once foliage declines in late summer and during dormancy, but never allow prolonged waterlogging.
Light
Full sun (6–8+ hours) yields the best flowering and sturdy stems. In hot climates, provide light afternoon shade to reduce heat stress and prolong bloom. Morning sun is particularly valuable for drying dew-laden foliage and limiting botrytis. Peonies will survive in bright partial shade but often produce fewer, smaller flowers and weaker stems. Avoid deep shade and crowded sites; maintain open exposure with good air circulation and keep competing roots from trees at bay.
Nutrients
Feed lightly; peonies resent excess nitrogen. In early spring, when shoots are 5–8 cm tall, apply a balanced or slightly phosphorus- and potassium-leaning fertilizer (e.g., 5-10-10 or 10-10-10) as a side-dress, keeping granules off the crown. After flowering, top-dress with compost and a bit of low-nitrogen organic fertilizer or bone meal to support next year’s buds. Avoid late-summer fertilization, which can spur tender growth. Always confirm needs with a soil test and maintain even soil fertility.
Temperature
Hardy in USDA Zones 3–8, Paeonia lactiflora needs winter chill to set buds. It tolerates severe cold when crowns are planted correctly and soil drains well. Protect swelling buds from late spring frosts with a light cover during cold snaps. In hot-summer climates, provide mulch to moderate root temperatures and ensure consistent moisture; extended heat above 32°C can stress plants and reduce flowering. Avoid saturated soils in cold weather, which predispose crowns to rot.
