String Of Pearls Identification Guide

Key Identifying Features

String of Pearls (Curio rowleyanus, formerly Senecio rowleyanus) is unmistakable once you know what to look for. It is a trailing succulent whose leaves are reduced to small green spheres the size of peas, strung along thin stems like a beaded necklace.

• Bead-like round leaves, roughly 6 mm (1/4 inch) across
• A translucent "window" — a thin lengthwise stripe on each pearl that lets light into the leaf interior
• Slender, trailing stems that cascade over pot edges and can reach 60–90 cm (2–3 ft)
• Shallow, fibrous roots; the plant roots easily wherever a stem touches soil

Leaves & Stems

The "pearls" are modified leaves adapted to store water in arid conditions. Each is firm, smooth, and bright green, sometimes ending in a tiny pointed tip. Hold one to the light and you will see the characteristic clear band — this epidermal window is a reliable diagnostic. Stems are wiry, green, and flexible, drooping downward rather than climbing. Unlike many trailing houseplants, there are no flat blades or tendrils.

Flowers & Fruit

When happy, mature plants produce small, brush-like white flowers about 1 cm wide, made of trumpet-shaped florets with protruding colorful stamens (often red, purple, or yellow). They are renowned for a sweet cinnamon or clove scent. Flowering typically occurs in late winter to spring. Seeds carry fluffy pappus tufts, like miniature dandelion seeds, confirming its membership in the daisy family (Asteraceae).

How to Tell It Apart from Look-Alikes

• String of Tears (Curio herreanus): leaves are more teardrop/lemon-shaped with a pointed end, not perfectly round.
• String of Bananas (Curio radicans): leaves are elongated, banana- or canoe-shaped and curved, clearly longer than wide.
• String of Dolphins (Curio × peregrinus): leaves have little dorsal "fins," resembling leaping dolphins.
• String of Pearls is the only one with near-perfect spheres bearing a translucent stripe.

Where You'll Find It

Native to drylands of southwest Africa, it is rarely seen wild outside that region. In cultivation it is a popular hanging-basket and shelf houseplant, prized for its cascading form. It needs bright light, fast-draining gritty soil, and infrequent watering; the beads shrivel and pucker when underwatered and turn mushy when overwatered.

A Note on Toxicity

All parts are mildly toxic to people and pets if eaten, and sap can irritate skin — useful confirmation that you are dealing with a Curio/Senecio rather than a harmless trailing plant.

Quick ID Checklist

• Round, pea-sized green beads on thin trailing stems
• Translucent lengthwise "window" stripe on each bead
• Cascading, non-climbing growth habit
• White brush-like flowers with a cinnamon scent (if blooming)
• Beads are spherical — not teardrop, banana, or dolphin shaped