Curly Spider Plant Care: Keeping the Curls & Fixing Brown Tips

Overview

The Curly Spider Plant (Chlorophytum comosum 'Bonnie') is a delightful, modern twist on one of the most classic and enduring houseplants in history. It boasts the exact same vibrant green and white stripes and prolific baby-producing capabilities as the traditional Spider Plant, but its leaves grow in tight, whimsical curls, giving it a much more compact, bouncy appearance. While it is famous for being incredibly easy to grow and propagate, many owners struggle with two cosmetic issues: the leaves losing their curl, and the tips turning brown and crispy. This guide will help you solve both.

Native to the coastal and riverine regions of Southern Africa, the Spider Plant evolved as a groundcover beneath the canopy of larger trees. It is accustomed to bright, dappled sunlight and periods of heavy rain. To survive, it developed thick, fleshy, almost tuberous roots that store large amounts of water. Because it has built-in water reserves, it is quite tolerant of forgetful watering, making it an ideal beginner plant.

Light: The Secret to the Curl

Light is the key to maintaining the 'Bonnie's unique appearance. It requires bright, indirect light (such as an east or west-facing window) to maintain its tight curls and the sharp contrast of its white stripes. If you place a Curly Spider Plant in a low-light corner, it will adapt by producing more chlorophyll (turning greener) and flattening its leaves out to catch as much light as possible. Over time, a low-light 'Bonnie' will look almost identical to a standard, straight-leaved Spider Plant. However, avoid harsh, direct afternoon sun, which will rapidly scorch and bleach the foliage.

Temperature

This resilient plant adapts well to almost any standard household temperature between 65°F and 80°F (18°C - 27°C). It can tolerate cooler temperatures down to 50°F (10°C) during the winter, but it is not frost-hardy.

Humidity

Curly Spider Plants are perfectly happy in average indoor humidity (40% to 50%). They do not require a humidifier. However, in exceptionally dry homes during the winter, the lack of humidity can contribute to brown leaf tips.

Watering and Water Quality

This is where most cosmetic issues arise. Spider Plants are notoriously sensitive to the fluoride and chlorine added to municipal tap water. Over time, these chemicals build up in the tips of the leaves, causing them to turn brown and crispy. To prevent this, water your plant with distilled water, rainwater, or tap water that has been left sitting out for 24 hours (which allows the chlorine, but not the fluoride, to evaporate). When watering, allow the top 2 inches of the potting mix to dry out completely before giving the plant a thorough soak. Because of their thick, water-storing roots, they prefer to dry out slightly rather than sit in constantly soggy soil. If the leaves look pale and are drooping dramatically, the plant is thirsty.

Soil

A standard, well-draining indoor potting mix is perfect. You do not need a specialized soil, but ensuring the pot has drainage holes is non-negotiable to prevent root rot.

Fertilizer

Spider Plants are moderate feeders but are very sensitive to fertilizer salt buildup (which also causes brown tips). Feed them only once a month during the spring and summer using a balanced liquid houseplant fertilizer diluted to quarter strength. Do not fertilize in the fall and winter.

Propagation: The 'Babies'

Propagation is where the Spider Plant shines. As it matures and receives enough light, it will send out long, arching stalks (stolons) that produce small white flowers and miniature clones of the mother plant, known as "spiderettes" or "pups." To propagate, simply wait until a pup has developed small root nubs on its base. Snip the pup off the stalk and place it in a small glass of water until the roots are an inch long, then plant it in soil. Alternatively, you can place a small pot of soil next to the mother plant, pin the pup into the new soil while it is still attached to the stalk, and cut the stalk only after the pup has rooted. Producing dozens of pups requires immense energy; if your mother plant looks exhausted and pale, prune the pups off to let it recover.

Repotting

Spider Plants have incredibly aggressive, thick roots that grow rapidly. They need repotting every 1 to 2 years. They are famous for growing so many roots that they physically push the plant up and out of the pot, or even crack plastic nursery pots. When you repot, go up one pot size and use fresh soil.

Toxicity

The Curly Spider Plant is completely non-toxic to cats, dogs, and humans. However, pet owners should be aware that the plant contains compounds that are mildly hallucinogenic to cats, acting somewhat like catnip. Cats are often obsessed with chewing on the long, dangling leaves. While it won't poison them, they will likely destroy the plant and may vomit up the undigested leaves.

Common Problems

Brown, crispy leaf tips are almost unavoidable unless you use pure distilled water. You can safely snip the brown tips off with sterilized scissors, cutting them into a natural point. If the plant is losing its curl, move it to a brighter location. If the center of the plant is turning yellow and mushy, it is suffering from crown rot due to severe overwatering.