String of Pearls
Curio rowleyanusalso Senecio rowleyanus

String of Pearls

60–80°FComfort range
LowHumidity
Bright indirectModerateToxic to pets
Background

String of pearls is the trailing succulent everyone wants and plenty struggle with - cascading strands of round, pea-like leaves spilling over the pot. Each 'pearl' is a water-storing leaf with a translucent window that lets light in, which is the plant's clever way of coping with strong sun in a compact form.

The two failures are always the same: not enough light, so the strands go leggy and the pearls shrivel; or too much water, which rots the shallow roots overnight. Give it your brightest indirect spot, a gritty succulent mix, and a thorough soak only once the soil is bone dry. Grown well, it is easy to propagate - lay a strand across fresh soil and it roots itself.

Wants very bright indirect light with a little direct morning sun; too dim and the strands stretch and the pearls space out and shrivel.

The routine

Water only once the soil is fully dry, then soak thoroughly

every 2–3 weeks

Feed lightly with a dilute succulent fertiliser

every 8 weeksGrowing season

Trim leggy strands and lay them on soil to root and fill out the pot

Shrivelled pearls mean too little water or light; mushy ones mean rot

Repot only when needed - it likes a snug pot

every 2–3 years
Care at a glance
LightBright indirect
WaterEvery 2–3 weeks; let the soil dry fully
How to waterWater the soil thoroughly, then let it dry completely - the pearls store water, so overwatering and rot are the main killers
Drought toleranceTolerant - forgives a missed watering and prefers to dry out.
Soil mixGritty, free-draining cactus/succulent mix
HumidityLow
Temperature60–80°F
DifficultyModerate
HabitTrailing
Mature sizeStrands trail 1–3 ft
PropagationLay a strand on soil and it roots at the nodes
Watch for
MealybugsAphidsSpider Mites