Description
Jimo Dan (Princess Peony) is a perennial succulent in the cactus family, genus Pachyphytum, and is a dwarf variant of the Black Peony. The plant starts out solitary, and when mature small clumps develop at the base, giving a clustered appearance. Its spread is 3–5 cm, with a gray‑green surface; the tubercles are broad triangular with a prominent central groove, and it has a carrot‑shaped tuber. Flowers are pink, reddish‑purple, and white, blooming in autumn. The pendant, bell‑shaped flowers open during the day and close at night, lasting 5–7 days. Variants include clustered and variegated forms, and a hybrid with Black Peony called “Jimo Black Peony.” Native to Mexico, it prefers warm, dry, sunny conditions and tolerates drought and semi‑shade. In summer, the plant enters a dormant period at high temperatures and needs controlled watering and ventilation; in winter it requires cool, dry conditions. Cultivation requires well‑draining sandy soil and follows a “no dry, no watering” principle; it is prone to rust disease, so potassium fertilizer should be increased to prevent it. Propagation is mainly by seed; true‑to‑type seedlings grow slowly, taking 4–5 years to flower but have excellent appearance. Grafting can accelerate flowering but can also lead to premature aging; the root system is weaker and appearance may differ. Typically a triangular pillar or a grass ball is used as a rootstock. As a small potted plant, it is often used to decorate tables or windowsills; due to its slow growth and rarity, it is prized by collectors.
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