String of Pearls (Senecio rowleyanus) Care: Growing the Iconic Trailing Succulent

String of pearls (Senecio rowleyanus, syn. Curio rowleyanus) is a succulent masterpiece—pea-sized, spherical leaves on thread-like stems that cascade like a green necklace. Named for British botanist Gordon Douglas Rowley, it's a drought-tolerant, fast-growing trailer perfect for hanging baskets, high shelves, and xeriscape groundcover.

Quick Reference

• Botanical name: Senecio rowleyanus (Asteraceae)
• Common names: String of beads, string of peas, rosary beads
• Type: Evergreen perennial succulent; trailing
• Trail length: 2–3 ft
• Light: Bright indirect; 2–3 hrs direct + indirect rest of day
• Temperature: 70–80°F spring–fall / 55–60°F winter; never <45°F
• Humidity: Average to dry
• Water: Low; thorough monthly; let dry well between
• Soil: Sandy, fast-draining (cactus/succulent mix or 3:1 potting soil:sand)
• Fertilizer: Half-strength general liquid, 1–2×/month spring–summer
• Propagation: Stem tip cuttings (4"+)
• Toxicity: All parts toxic—vomiting, diarrhea, dermatitis (humans & pets)
• USDA Zones: 8a–10b outdoors

Unique Leaf Adaptations

• Spherical shape = minimal surface area = reduced water loss.
• Translucent "window" on each leaf admits light for internal photosynthesis.
• Pointed tip aids water runoff.

Light

• South or west window ideal.
• 2–3 hrs direct morning/early afternoon; bright indirect rest of day.
• If insufficient: 14–16 hrs fluorescent/LED daily in growing season.
• Leggy, sparse growth = needs more light.

Soil & Potting

• Drainage is everything. Cactus/succulent mix or DIY 3:1 potting soil:sharp sand.
• Hanging basket or tall pot for cascade.
• Shallow roots—wide, not deep pot.

Watering: The #1 Killer

• Succulent = drought-tolerant. Overwatering = root rot.
• Water thoroughly 1–2×/month growing season; less in winter.
• Soil should be damp, not wet. Dry well before next watering.
• Empty saucer always. No standing water.
• Shriveling pearls = underwatering. Mushy, translucent = overwatering.

Temperature

• Heat/drought tolerant; cold sensitive.
• Keep 55–80°F. Avoid cold drafts, AC vents, unheated sunrooms in winter.
• Cold exposure = leaf drop.

Fertilizing

• Half-strength general liquid, monthly or biweekly spring–summer.
• None fall–winter.

Propagation

1. 4"+ healthy stem tip cutting.
2. Place in moist succulent mix; bury leaf nodes (roots form at axils).
3. Roots develop quickly from axils.
4. Water sparingly until established.

Repotting

When root-bound. Use 3:1 potting soil:sharp sand or cactus mix. Handle gently—stems brittle.

Toxicity Warning

Every part is toxic. Keep away from children and pets.

• Humans: ingestion → vomiting, diarrhea; sap → rash, irritation.
• Dogs/cats: lethargy, drooling, vomiting, diarrhea, oral dermatitis.

Design Uses

• Hanging basket (classic)—pearls cascade 3+ ft.
• High shelf / macramé hanger.
• Shallow dish as "living necklace" centerpiece.
• Xeriscape groundcover (Zones 8b+).
• Mixed succulent containers (trailer element).

String of pearls asks for brightness, drainage, and restraint. Give it those, and it drapes your space in living green pearls—effortless elegance from a botanical minimalist.