String of Pearls Leaves Curling

Why the pearls shrivel and how to get them round again

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At a glance

  • Pearls firm but wrinkled and flat with dry soil: Underwatering; water thoroughly
  • Pearls shriveling despite watering in a very bright spot: Too much direct sun or heat; move to bright indirect light
  • Pearls soft, mushy, or translucent with wet soil: Overwatering or root rot; repot in dry mix with roots trimmed
  • Pearls shriveling despite correct watering in a very old pot: Root-bound; repot one size larger

Why string of pearls pearls shrivel and curl

String of pearls (Senecio rowleyanus, also classified as Curio rowleyanus) is one of the most distinctive and popular trailing succulents, with its long strands of round, pea-sized leaves that look like a beaded necklace. Those spherical leaves are the key to understanding the plant's health: when healthy, the pearls are firm, round, and uniformly sized. When stressed, they change shape in ways that diagnose the problem almost immediately. Firm, wrinkled, or flat pearls mean drought. Soft, mushy, or translucent pearls mean overwatering. Pearls that stay round but turn brown or yellow from the tip inward suggest too much direct sun or heat. The sphere shape is the pearl's water reservoir; reading how it changes tells you exactly what the plant needs.

Cause 1: Underwatering

Signs: The pearls have shrunk from round spheres to flat, wrinkled, or oblong shapes. They feel firm when pressed rather than soft or mushy. The soil is completely dry. The pot is very light. The strands may look less dense than usual as the pearls have reduced in size. The shriveling started at the tips of the strands.

Why it happens: String of pearls stores water in its spherical leaves. When the soil dries out and root water supply drops, the plant draws from its leaf reserves, causing the pearls to shrink and wrinkle as the stored water is depleted. Despite being a succulent, string of pearls is thirstier than many other succulents and does not tolerate extended drought as well as cacti or thick-leaved Echeveria. In warm conditions the soil can dry out faster than expected, and the pearls begin to shrivel within a few days of the soil becoming completely dry.

Fix: Water thoroughly, ensuring the entire root ball is moistened. The pearls should begin to plump back up within 24 to 48 hours as the cells rehydrate. Going forward, water when the top inch of soil is dry but before the lower soil dries out completely — roughly every 10 to 14 days in summer and every 3 to 4 weeks in winter. Always allow the pot to drain fully. A dried-out root ball may initially resist absorbing water; bottom-soaking the pot in a container of water for 20 to 30 minutes ensures full rehydration of a very dry root zone.

Cause 2: Too much direct sun or heat

Signs: The pearls are shriveling or developing brown, dried patches at their tips even though watering is regular and the soil is not completely dry. The plant is positioned in intense direct sunlight or in a very warm location. The most exposed portions of the strands are affected first. The pearls may also be turning pale or yellowish before browning.

Why it happens: String of pearls prefers bright indirect light or moderate direct sun, but intense afternoon sun or very high temperatures cause the plant to lose moisture faster than the roots can supply it. The pearls shrivel from heat-driven water loss at the surface even when the root zone has water available. Direct afternoon sun in summer can reach temperatures hot enough to scorch the pearls and permanently damage the exposed tips.

Fix: Move to a position with bright indirect light or gentle morning sun only. East-facing windows or a spot a few feet from a south-facing window work well. In summer outdoors, place in dappled shade rather than full sun. Brown, dried pearl tips will not recover but new growth will be healthy. Watering slightly more frequently in hot weather helps compensate for increased water loss.

Cause 3: Overwatering and root rot

Signs: The pearls are soft, mushy, or translucent rather than firm. They may be bursting or collapsing. Some pearls are falling off the strands. The soil has been consistently wet. The pot smells musty. Roots, when inspected, are dark and mushy rather than pale and firm.

Why it happens: String of pearls is extremely susceptible to overwatering and root rot. Its roots are shallow and fine and rot very quickly in consistently wet soil. Root rot destroys the roots' ability to supply water, so the pearls lose their water supply from the inside; but overwatering also directly floods the pearl cells, causing them to become waterlogged and burst. Soft, mushy pearls distinguish overwatering from drought (firm, wrinkled pearls). Overwatering is the single most common way string of pearls dies indoors.

Fix: Remove from the pot immediately. Inspect the roots and trim all dark, mushy material. Allow the healthy roots to air-dry for 1 to 2 days. Repot in completely dry, very well-draining succulent mix — a blend of potting soil and coarse perlite or pumice is ideal. Do not water for at least 1 week after repotting. Going forward, water only when the soil is fully dry throughout the pot, which in most indoor conditions is every 2 to 3 weeks in summer and every 4 to 6 weeks in winter.

Cause 4: Root-bound

Signs: The pearls are shriveling despite consistent correct watering. The plant has been in the same small pot for 2 or more years. Roots are visible growing out of the drainage holes or massed visibly at the soil surface. The soil dries out very quickly after watering — within a day or two.

Why it happens: When the root ball becomes too compressed in a too-small pot, the roots cannot absorb water efficiently and the pearls begin to shrivel even when the owner is watering correctly. The compacted root ball also dries out very quickly because roots displace most of the soil volume, leaving little medium to hold moisture. This is often misdiagnosed as underwatering when the real fix is repotting.

Fix: Repot into a container one size larger (about 1 to 2 inches wider in diameter) using fresh, dry, well-draining succulent mix. String of pearls does not need a large pot and can stay somewhat compact; just one size up is sufficient. Repot in spring. The pearls should plump up within a week or two as the roots establish in the fresh mix.