Description
Euphorbia bupleurifolia Jacq. (commonly known as the Cycas-like spurge) is a perennial succulent. Its stem is deep brown and resembles that of a cycad, which is why it is called the Cycas-like spurge. In its early stage the stem is a green globular shape, then it elongates into a cylindrical form, reaching about 20 cm in height. The surface bears black diamond‑shaped nodular protrusions arranged spirally, resembling a pinecone; these are the remnants of fallen leaves. The leaves are slender, pale green, long‑elliptical, about 10–15 cm long, with slender petioles. What people think of as flowers are actually bracts, similar to those of the quail plant; two bracts are arranged oppositely, colored milky yellow, and the true flower is located at the center of the bracts, hardly noticeable. The iron‑armor plant prefers warm, dry conditions and ample sunlight, is drought tolerant but not cold tolerant; it should not be kept in damp, shaded environments and has no obvious dormancy period. It is drought tolerant and hardy. However, during the summer growing season it requires ample and regular watering. The plant prefers well‑drained soil and should not have standing water in the pot. In summer’s high temperatures, increasing air humidity and providing partial shade can help it survive the heat. In winter it can tolerate temperatures around 10 °C, but when temperatures drop too low, it should be kept dry to avoid frost damage. The plant grows slowly, has low fertilizer requirements, but excessively dry soil can hinder nutrient absorption.
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