Cordyline, commonly called the ti plant, is grown for its bold, sword-shaped leaves splashed in red, pink, burgundy, cream, and green. Native to the tropical Pacific and Southeast Asia, it brings instant color to a bright room or a warm patio and can grow into a striking upright accent over time. Cordylines are not difficult, but they are particular about two things: they want bright light to keep their color, and they are sensitive to fluoride and salts in water, which show up fast as brown leaf tips. Sort those out, keep them warm, and the ti plant is a rewarding, long-lived foliage plant. This guide covers light, watering, soil, humidity, propagation, problems, and pet safety.
Key Takeaways
- Light: bright light, including some direct sun, keeps the reds and pinks vivid; low light fades them.
- Water: keep soil evenly moist; use filtered or distilled water to avoid brown tips.
- Soil: rich, well-draining mix that holds some moisture without staying soggy.
- Humidity: loves 50%+; dry air causes crispy edges and invites spider mites.
- Propagation: easy from stem sections (“ti logs”) or top cuttings.
- Toxicity: toxic to cats and dogs (saponins); keep out of reach.
Light: The Key to Color
Light is what makes or breaks a cordyline’s looks. The vivid reds, pinks, and variegation depend on plenty of bright light. Indoors, give the plant the brightest spot you have — an east, west, or lightly filtered south window. Cordylines tolerate and even appreciate a few hours of direct sun, especially the deeper red and burgundy varieties, though very intense midday sun through glass can scorch the leaves, so some diffusion helps.
In low light, a cordyline survives but its colors mute toward green, new growth comes in smaller and paler, and the plant grows leggy as it reaches for the window. If your colorful ti plant is turning plain green, the fix is more light. In dim homes, a grow light running 10 to 12 hours a day maintains both color and compact growth. Rotate the pot periodically for even growth. Outdoors in zones 9 to 11, cordylines grow as landscape shrubs in part sun; in cooler zones they are kept as container or houseplants and brought inside before cold weather.
Watering and Water Quality
Cordylines like their soil kept evenly moist during the growing season — not soggy, but not drying out completely. Water thoroughly when the top inch of soil begins to dry, letting it run from the drainage holes, then empty the saucer. In warm, bright conditions that might mean watering once or twice a week; in winter, when growth slows, let the soil dry a bit more between waterings. Both extremes cause trouble: constant sogginess rots the roots, while repeated drying-out causes leaf drop and crispy tips.
Water quality matters more for cordylines than for most houseplants. They are notably sensitive to fluoride, chlorine, and soluble salts, which accumulate in the leaves and produce the brown, scorched tips this plant is famous for. If your tap water is fluoridated or heavily treated, switch to filtered, distilled, or rainwater, or at minimum let tap water sit out overnight before using it. Avoid using softened water, which is high in salts. Flushing the soil thoroughly every couple of months — running plenty of water through the pot — helps wash out accumulated salts and keeps the tips clean.
Soil and Feeding
Give cordylines a rich, well-draining potting mix. A quality houseplant or all-purpose potting soil amended with some perlite for drainage works well — you want a mix that holds moisture for steady hydration but does not stay waterlogged. Slightly acidic soil suits them. Always pot into a container with drainage holes, and step up one pot size when roots fill the current one, usually every year or two in spring.
During spring and summer, feed every 2 to 4 weeks with a balanced liquid fertilizer at half strength, or use a slow-release granular fertilizer at the start of the season. Cordylines are moderate feeders; over-fertilizing contributes to the salt buildup that browns the tips, so go easy and flush the soil periodically. Stop feeding in fall and winter when growth naturally slows. Over time the lower leaves yellow and drop as the plant grows taller and develops a bare, palm-like stem — this is natural aging, and you can prune the top to encourage bushier branching. The rich-but-draining mix and salt-flushing advice applies broadly across our Plants & Flowers guides.
Humidity and Temperature
As tropical plants, cordylines appreciate humidity of 50% or higher. In dry indoor air, particularly in winter with the heat running, leaf edges and tips turn brown and crispy and the plant becomes a magnet for spider mites. Boost humidity with a small humidifier nearby, group plants together, or set the pot on a pebble tray. Wiping the leaves occasionally keeps them clean and lets you spot pests early.
Keep cordylines warm, ideally between 65°F and 80°F. They are not frost-hardy and suffer below about 50°F, so protect them from cold drafts, chilly windows, and unheated rooms in winter. If you move a cordyline outdoors for the warm season, bring it back inside well before temperatures drop into the 40s. Equally, keep it away from the hot, drying air of heating vents, which accelerates tip burn. Steady warmth and humidity, with clean water, is the recipe for full, colorful foliage.
Propagation From Cuttings
Cordylines are easy to propagate, and the best time is spring or summer during active growth. There are several reliable methods.
Stem sections (“ti logs”)
- Cut a section of mature stem 3 to 5 inches long, noting which end was lower (closer to the roots).
- Lay the section horizontally on, or half-buried in, moist potting mix or perlite — or stand it upright, lower end down.
- Keep warm, humid, and brightly lit but out of harsh direct sun.
- New shoots and roots emerge from the nodes over a few weeks; pot up once growth is established.
Top and stem-tip cuttings
Cut the leafy top of a leggy plant with a few inches of stem and root it in water or moist mix. Rooting hormone speeds things along but is not essential. Cordylines can also be air-layered, and mature plants sometimes produce offshoots at the base that can be divided away with roots attached. Keep all cuttings warm and humid while they root — the same warmth-and-humidity principle covered in our pothos propagation guide. Rooting a top cutting is also a tidy way to rejuvenate a tall, bare-stemmed plant.
Common Problems and Fixes
Brown leaf tips
The signature cordyline complaint. It is usually fluoride, chlorine, or salt in the water, or salt buildup from fertilizer. Switch to filtered, distilled, or rainwater, flush the soil to remove accumulated salts, ease off feeding, and keep humidity up. Low humidity and underwatering can also cause tip browning.
Fading color / green leaves
Not enough light. Move the plant somewhere brighter, ideally with a few hours of gentle direct sun, or add a grow light. The colorful varieties simply cannot hold their reds and pinks in dim conditions.
Dropping or yellowing lower leaves
Some lower-leaf drop is natural as the plant grows taller. Excessive yellowing and drop points to overwatering, cold drafts, or letting the soil dry out completely. Check moisture and temperature.
Spider mites and other pests
Cordylines are prone to spider mites in dry air — look for fine webbing and stippled, dusty-looking leaves. Raise humidity, rinse the foliage, and treat with insecticidal soap or neem oil, repeating weekly until clear. Also watch for mealybugs and scale.
Are Cordylines Toxic to Pets?
Yes. Cordyline (ti plant) contains saponins and is listed by the ASPCA as toxic to cats and dogs. If a pet chews the leaves, expect vomiting (sometimes with blood), drooling, loss of appetite, and depression; cats may show dilated pupils. While rarely life-threatening, it is unpleasant and worth avoiding. Keep cordylines out of reach of pets that nibble on plants, and contact your veterinarian if you suspect your animal has eaten part of one. The plant is generally regarded as non-toxic to humans, but it is still best kept away from small children. Because cordylines want bright light and grow tall, a sunny spot up on a plant stand or in a corner away from pet traffic often satisfies both the plant and your peace of mind.
Frequently Asked Questions
Why does my cordyline have brown tips?
Most often it is fluoride, chlorine, or salts in the water, or salt buildup from fertilizer. Switch to filtered, distilled, or rainwater, flush the soil periodically, ease off feeding, and keep humidity above 50%. Underwatering and dry air also contribute.
Why is my cordyline losing its color?
Not enough light. The vivid reds and pinks depend on bright light and even some direct sun. In low light the leaves fade toward green and growth gets leggy. Move it to a brighter window or add a grow light.
How do I propagate a cordyline?
Easily, from cuttings. Take a stem section a few inches long and root it in moist mix or perlite (“ti logs”), or root a leafy top cutting in water or soil. Keep cuttings warm, humid, and brightly lit, and new growth appears within a few weeks.
How often should I water a ti plant?
Keep the soil evenly moist, watering when the top inch begins to dry — often once or twice a week in warm months and less in winter. Avoid both soggy soil and complete dry-out, and use low-mineral water to prevent brown tips.
Are cordylines poisonous to cats and dogs?
Yes. Cordylines contain saponins and are toxic to cats and dogs, causing vomiting, drooling, and loss of appetite if chewed. They are considered non-toxic to humans. Keep the plant out of reach of pets and call your vet if your animal eats some.
The ti plant is a long-lived, colorful anchor for a bright room or warm patio, and most of its reputation for fussiness comes down to two fixable things: give it enough light to hold its color, and use clean, low-mineral water to keep its tips from browning. Add steady warmth, even moisture, and decent humidity, and your cordyline will keep pushing out vivid new foliage for years — with plenty of cuttings to start more along the way.