String of Bananas (Senecio radicans, also sold as Curio radicans) is the easygoing, faster-growing cousin of the famously finicky String of Pearls. Its trailing stems are studded with plump, glossy, banana-shaped leaves that cascade quickly over the edge of a hanging basket — often growing several feet in a single season under good conditions. It is more forgiving of light and watering mistakes than its pearl-leaved relative, which makes it an excellent first trailing succulent. This guide walks through light, watering, soil, humidity, propagation, common problems, and pet safety so you can keep those green bananas plump and lush.
Key Takeaways
- Give bright indirect light with a few hours of gentle direct sun — an east or lightly filtered south window is ideal.
- Water with the soak-and-dry method, roughly every 1–2 weeks in summer and every 3–4 weeks in winter.
- Use a gritty cactus mix with extra perlite or pumice in a pot with drainage.
- Average household humidity is fine; never mist, as it encourages rot.
- Propagation is fast and easy from stem cuttings laid on or pinned into soil.
- String of Bananas is mildly toxic to cats and dogs, so hang it out of their reach.
Light: Bright and Mostly Indirect
String of Bananas wants bright light — at least six hours of bright indirect light per day, ideally with a couple of hours of soft direct morning sun. An east-facing window is close to perfect, while a south- or west-facing window usually needs a sheer curtain to take the edge off the harshest afternoon rays, which can scorch the leaves.
Light controls how full the plant looks. In good light the stems stay compact with leaves packed closely together; in low light the vines stretch, the gaps between leaves widen, and growth turns leggy and pale. If your plant is reaching or thinning out, move it brighter or supplement with a grow light. Because hanging baskets often place the plant deeper in the room than a windowsill, watch for this stretching and rotate the basket occasionally so all sides get even light. Outdoors in zones 10–11 it grows happily in bright shade to part sun, but acclimate it slowly to prevent sunburn.
Watering: Soak and Dry
Those banana-shaped leaves are water reservoirs, so this succulent handles drought far better than overwatering. Follow the soak-and-dry approach: water thoroughly until liquid drains from the bottom, then let the soil dry out almost completely before the next watering.
During the warm growing season this usually works out to about once every one to two weeks, slowing to every three or four weeks in winter when the plant rests. Rather than relying on a fixed schedule, read the leaves: firm, rounded bananas mean the plant is well-watered, while flattened, soft, or shriveled leaves signal genuine thirst. Overwatered plants show yellowing, translucent, or mushy leaves and a soggy base. Because the shallow root system sits in fast-draining mix, the plant can dry out faster than you expect in summer heat, so check more often during hot spells and a little less in winter.
Soil and Potting
Use a fast-draining cactus and succulent mix amended with extra perlite, pumice, or coarse sand. The goal is a gritty, airy medium that never stays wet for long, since standing moisture around these delicate roots quickly causes rot.
Always plant in a container with a drainage hole. Terracotta is a great choice because it breathes and helps excess moisture evaporate. String of Bananas has a relatively shallow, modest root system and is happy being a little snug, so repot only every couple of years or when it is clearly root-bound. Spring is the best time to repot. Feed lightly during the growing season with a balanced fertilizer diluted to half strength, about once a month from spring through summer, and stop entirely in fall and winter. Light pruning of long or bare stems encourages branching and a fuller cascade — and the trimmings are perfect for propagation. For more trailing-plant inspiration, see our guide on how to care for a Burro’s Tail.
Temperature and Humidity
This succulent is comfortable in normal home temperatures, ideally between 65 and 80°F. It is not cold-hardy and should be protected from temperatures below about 50°F, so move outdoor plants inside before fall nights turn chilly. Keep it away from cold drafts and from the hot, dry blast of heating vents.
As a desert-adapted plant, it prefers low to average humidity and does not need any extra moisture in the air. Avoid misting — wet foliage in still air invites rot and fungal spots. Good airflow is far more beneficial than humidity. If you summer it outdoors, choose a spot with bright light but shelter from prolonged rain so the soil never stays saturated.
Propagation: Fast and Forgiving
String of Bananas is one of the quickest succulents to propagate, rooting reliably from stem cuttings. There are two simple methods.
Laying Cuttings on Soil
Snip a few healthy stems several inches long. Let the cut ends callus for a day or two, then lay the cuttings flat on top of dry, gritty soil, pressing them lightly so they make good contact. Roots form along the nodes that touch the soil. Mist the surface lightly every few days, and within two to three weeks you will see new roots anchoring the stems.
Planting Cuttings Upright
Alternatively, strip the leaves from the bottom inch of a cutting, let it callus, and insert that bare end into the soil. Either way, planting several cuttings around the rim of the same pot quickly produces a thick, full basket. Keep new cuttings in bright, indirect light and water sparingly until they establish. For another beginner-friendly project, our guide on how to propagate a spider plant covers similar low-effort techniques.
Common Problems and Fixes
Shriveling Leaves
Flat, wrinkled, or shrunken bananas usually mean underwatering — give the plant a thorough soak and the leaves should plump up within a day or two. If shriveling is paired with yellowing and mushiness, though, the cause is the opposite: overwatering and rotting roots.
Mushy, Yellow Stems and Root Rot
Yellow, translucent, or mushy stems and a sour smell indicate root rot from excess moisture. Unpot the plant, trim away all soft tissue with sterile scissors, let it dry, and replant the healthy sections in fresh, dry, gritty mix. Salvage firm stem tips as cuttings if the roots are too far gone.
Leggy, Sparse Vines
Long stretches of stem with widely spaced leaves point to insufficient light. Move the plant brighter, then prune the leggy stems and tuck the cuttings back into the pot to thicken it up.
Pests
Mealybugs and aphids are the usual culprits, often hiding among the dense leaves. Treat mealybugs with a cotton swab dipped in 70% isopropyl alcohol, and rinse aphids off or treat with insecticidal soap. Inspect regularly, since pests can hide easily in a thick, trailing canopy.
Is String of Bananas Toxic to Pets?
Unlike Burro’s Tail, String of Bananas is mildly toxic to cats and dogs, and its sap can also irritate human skin. If a pet chews on it, expect possible drooling, vomiting, or mild stomach upset, and skin contact with the sap may cause irritation. While not usually life-threatening, it is best treated as a pet-unsafe plant. Conveniently, the ideal way to display this trailing succulent — high up in a hanging basket — also keeps it out of reach of curious cats and dogs. Wash your hands after handling cut stems, and if a pet ingests a significant amount, contact your veterinarian. For more on building a safe indoor garden, browse our full library of Plants & Flowers guides.
String of Bananas vs. String of Pearls
Many gardeners come to String of Bananas after struggling with the notoriously temperamental String of Pearls (Senecio rowleyanus), and the comparison is worth understanding. Both are trailing Senecio succulents with similar care needs, but String of Bananas is the more forgiving of the two. Its tapered, banana-shaped leaves are larger and tougher than the tiny spherical pearls, which makes the plant more tolerant of inconsistent watering and a wider range of light.
String of Pearls is infamous for sudden collapse from overwatering or poor drainage, while String of Bananas grows faster, recovers from mistakes more readily, and trails more vigorously. If you have killed a String of Pearls and want a similar look with less risk, String of Bananas is the answer. The core care — soak-and-dry watering, gritty soil, and bright light — is essentially the same, just with more margin for error.
Will It Flower?
Given enough bright light and a proper winter rest, String of Bananas can surprise you with small, fuzzy, cinnamon-scented white flowers, typically in late winter or early spring. The blooms are modest in appearance but pleasantly fragrant. To coax flowering, give the plant a cool, dry rest period over winter — cooler temperatures (still above 50°F) and reduced watering for several weeks signal the plant to set buds. Bright light year-round is essential; a plant kept in dim conditions rarely blooms. Even without flowers, the plant’s cascading foliage is the main attraction, so treat blooms as a welcome bonus rather than the goal.
Seasonal Care Summary
Spring and summer bring rapid growth: provide bright light, water on the soak-and-dry cycle every one to two weeks, and feed monthly at half strength. In fall, taper feeding and lengthen the time between waterings. In winter, let the plant rest with minimal water (every three to four weeks), no fertilizer, and a warm, bright spot away from cold glass — this cool, dry rest is also what encourages spring flowering. This seasonal rhythm keeps the bananas plump and the cascade dense rather than thin and stretched.
Frequently Asked Questions
Why is my String of Bananas shriveling?
Shriveled, flat leaves most often mean the plant is thirsty — give it a deep soak and the bananas should plump up within a day or two. If shriveling comes with yellowing and mushy stems, the cause is overwatering and root rot instead, which calls for drying out and checking the roots.
How often should I water String of Bananas?
Water only when the soil is nearly dry — roughly every 1–2 weeks in summer and every 3–4 weeks in winter. Let the plump leaves and dry soil guide you rather than a strict calendar, and always err toward underwatering.
How do I make my String of Bananas fuller?
Give it brighter light to keep growth compact, then prune any leggy stems and lay or plant the cuttings back into the same pot. Adding several rooted cuttings around the rim quickly creates a thick, lush basket.
Is String of Bananas safe for cats and dogs?
No. It is considered mildly toxic to cats and dogs and can cause drooling, vomiting, or stomach upset if eaten, and the sap may irritate skin. Hang it high in a basket where pets cannot reach it.
Can String of Bananas grow outdoors?
Yes, in USDA zones 10–11 it grows outdoors year-round in bright shade to part sun. In cooler climates, grow it as a houseplant and bring it inside before temperatures drop below about 50°F, since it is not frost-tolerant.
With bright light, restrained watering, and gritty soil, String of Bananas grows fast and trails beautifully with very little effort. Keep it out of reach of pets, propagate the trimmings to fill out the basket, and you will enjoy a quick-growing, sculptural cascade that rewards even beginner succulent keepers.