Ti Plant Red Sister

How to care for Ti Plant Red Sister

Light

Bright, indirect light is essential for maintaining the deep pink and burgundy colouration of 'Red Sister'. An east or west-facing windowsill indoors suits it well, providing gentle morning or afternoon sun without the harshness of midday rays. Insufficient light causes the foliage to revert towards green, while prolonged direct midday sun can scorch the leaf margins. A sheer curtain is useful to filter south-facing windows during summer.

Watering

Water when the top 2 to 3 cm of compost has dried out, keeping the root zone evenly moist but never waterlogged. Use room-temperature water that has been allowed to stand overnight, or filtered water, as 'Red Sister' is sensitive to fluoride and chlorine, both of which can cause brown leaf tips. Reduce watering frequency in autumn and winter when growth slows, but do not allow the compost to dry out completely.

Soil and potting

A free-draining, moisture-retentive compost is ideal. A mix of peat-free multipurpose compost with 20 to 30% perlite or coarse horticultural grit works well. Avoid heavy, compacted or poorly draining mixes, as waterlogging quickly leads to root rot. A slightly acidic to neutral pH of 6.0 to 7.0 is preferred.

Feeding

During the active growing season from spring to early autumn, apply a balanced liquid fertiliser (such as a 20-20-20 formulation) diluted to half strength every two to four weeks. Do not feed in winter when growth is minimal, as unused fertiliser salts accumulate in the compost and can damage roots and cause leaf tip browning.

Humidity and temperature

High humidity between 50 and 70% is important; low humidity is one of the most common causes of poor performance indoors. Misting the foliage daily, placing the pot on a tray of damp pebbles, or using a room humidifier all help. Temperatures between 18 and 27 C are ideal, and the plant should not be exposed to cold draughts or temperatures below 10 C, as chilling injury leads to discolouration and leaf drop.

Repotting

Repot every two to three years in spring, moving up one pot size at a time. Choose a pot with adequate drainage holes. 'Red Sister' tolerates being slightly pot-bound, but once roots are visibly circling the drainage holes or emerging from the base it is time to repot. Refresh the top layer of compost annually if you decide not to repot.

Pruning

Pruning requirements are minimal. Remove yellowing or dead lower leaves cleanly at the base to maintain appearance and prevent rot. If the plant becomes leggy or too tall, the cane can be cut back to any point and new growth will emerge from below the cut. Prunings can themselves be used for propagation.

Is Ti Plant Red Sister toxic?

Common problems

How to propagate

Stem cuttings (tip or cane)

Cut a healthy stem section 10 to 15 cm long, remove lower leaves, and insert into moist perlite or a free-draining propagation mix. Place in a warm, humid environment at around 22 to 25 C with bright indirect light; roots typically form within four to eight weeks.

Air layering

Make a small upward cut or remove a ring of bark on a healthy stem, pack damp sphagnum moss around the wound, and wrap tightly with clear polythene film. Once a good root mass has formed through the moss, usually after six to ten weeks, sever below and pot up as an individual plant.

Offsets (basal suckers)

Mature plants sometimes produce basal shoots or offshoots at soil level; these can be separated carefully from the parent plant with a clean knife and potted up individually into a free-draining compost, then kept warm and humid until established.

Where Ti Plant Red Sister comes from

Native to South-east Asia, Papua New Guinea, northern Queensland, Australia, various Pacific islands.

Story and origins

The genus name Cordyline derives from the Greek word 'kordyle', meaning club, a reference to the enlarged, club-like underground rhizomes or roots produced by plants in this genus. The species epithet fruticosa comes from the Latin 'frutex', meaning shrub, describing the plant's woody, shrubby habit. 'Red Sister' is a cultivar name given by plant breeders to distinguish this particular selection for its vivid red and pink foliage from other forms of the species.

Cordyline fruticosa has been associated with human cultures across the Pacific for at least 2,000 to 3,000 years, carried by Polynesian voyagers as a valuable plant throughout their island-to-island migrations. In many Pacific Island cultures, including Hawaiian, Maori, and various Melanesian traditions, the plant holds spiritual significance and is believed to ward off evil spirits and bring good fortune, which explains the common name 'good luck plant'. It was introduced to Western botanical science during the era of European exploration in the Pacific and has since become a commercially important foliage plant grown worldwide. The colourful cultivar 'Red Sister' was developed and popularised in the 20th century horticultural trade, particularly in Hawaii and Florida, where it became one of the most commercially significant ornamental ti cultivars.

Varieties to know

Cordyline fruticosa 'Kiwi'

Green and yellow striped leaves with pink margins; more compact than 'Red Sister'

Cordyline fruticosa 'Black Magic'

Very dark purple-black foliage; a striking contrast to the brighter cultivars

Cordyline fruticosa 'Harlequin'

Variegated foliage with pink, cream, and green colouring; moderate vigour

Cordyline fruticosa 'Firebrand'

Deep reddish-bronze leaves; similar intensity to 'Red Sister' but with a more uniform tone

Cordyline fruticosa 'Miss Andrea'

Bright pink and green variegated leaves; compact habit suitable for smaller spaces

Fun facts

• In Hawaiian and wider Polynesian tradition, ti plant leaves are considered sacred and are used to wrap food for cooking, line earth ovens, and craft hula skirts and rain capes.
• The ti plant is not a true palm despite the common name 'palm lily'; it belongs to the same family as asparagus and is more closely related to yuccas and dracaenas.
• Fermented ti plant roots, known as 'okolehao', were traditionally used in Hawaii to produce an alcoholic beverage sometimes called Hawaiian moonshine.
• The deep pink and red pigmentation in 'Red Sister' is produced by anthocyanins and other flavonoid compounds that intensify under brighter light conditions.
• Cordyline fruticosa has been cultivated and spread across the Pacific by humans for thousands of years, making it difficult to determine its precise original wild range.

Ti Plant Red Sister FAQ