Purple heart (Tradescantia pallida) care

Vines & trailers · easy to keep

Last updated 26 October 2026

Purple heart (Tradescantia pallida) wants bright indirect light; the colours need it. Water it every 6 days. Keep the compost lightly damp. It wilts fast and recovers fast, but repeated wilting costs it the lower leaves. Pot it in standard compost with perlite. A balanced feed at half strength monthly in spring and summer, and repot once a year. Humidity: room humidity is fine. Mildly toxic to cats and dogs; the sap can also cause a skin rash in people who handle it a lot.

Purple heart: long, deep purple leaves on fleshy, sprawling stems, with small pink flowers in summer. Tougher and more drought-tolerant than the inch plant — in warm climates it is planted outdoors as ground cover — but it turns green and leggy without bright light.

Quick facts

Water: Water every 6 days. Keep the compost lightly damp. It wilts fast and recovers fast, but repeated wilting costs it the lower leaves.
Light: Bright indirect light; the colours need it.
Humidity: Room humidity is fine.
Soil: Standard compost with perlite.
Feeding: A balanced feed at half strength monthly in spring and summer.
Repotting: Repot once a year.
Toxic to pets: Mildly toxic to cats and dogs; the sap can also cause a skin rash in people who handle it a lot. The ASPCA does not list Tradescantia pallida itself, but lists a relative, Inch Plant (Tradescantia flumeninsis), as toxic to cats and dogs (checked 26 October 2026).
Difficulty: Easy.
Mature size: Trails or sprawls to 50 cm.
Native to: Eastern Mexico.

Watering a Purple heart

Water every 6 days. Keep the compost lightly damp. It wilts fast and recovers fast, but repeated wilting costs it the lower leaves.

That cadence is the one PlantParlour sets for this species when you name it, and it is deliberately on the cautious side — a plant that asks a day early is safer than one that asks a day late. Log each watering and the reminder moves with the plant rather than with the calendar.

Light

Bright indirect light, with an hour of direct sun welcome. The purple, pink and cream stripes wash out to plain green in a dim spot faster than almost any other houseplant.

Humidity and temperature

Room humidity is fine. Central heating in winter is what turns a comfortable room into a dry one, and it is the usual reason an established plant suddenly browns at the edges or picks up spider mites.

Soil and potting

Ordinary potting compost with perlite. Tradescantias are unfussy and grow at a speed that makes the mix almost irrelevant.

Feeding

A balanced feed at half strength monthly in spring and summer. Stop feeding in autumn and start again when you see new growth in spring — feeding a plant that isn't growing just builds up salts in the pot.

Repotting

Repot once a year. Every spring, or simply start again from cuttings — a tradescantia is at its best in its first year and goes bare in the middle in its second.

Common problems

Bare leggy stems with leaves only at the ends
Normal growth habit plus too little light.

Fix: Pinch the tips out regularly and root the cuttings back into the same pot. Move it brighter.

Leggy, stretched growth: how to read it on any plant
Stripes fading to green
Not enough light.

Fix: Move it brighter and cut out any wholly green stems — they outgrow the variegated ones.

Variegation fading: how to read it on any plant
Brown crisp leaves
It dried out.

Fix: Water more often; tradescantias are thirstier than they look.

Brown tips and edges: how to read it on any plant

Propagation

Absurdly easy. Any piece of stem roots in water in a week, or push several cuttings straight back into the parent's pot to keep it full.

A cutting taken in PlantParlour keeps its link to the plant it came from, so a propagation years later still traces back to the mother plant — which is the point if you ever sell or trade it.

Toxicity and safety

Mildly toxic to cats and dogs; the sap can also cause a skin rash in people who handle it a lot.

The ASPCA does not list Tradescantia pallida itself, but lists a relative, Inch Plant (Tradescantia flumeninsis), as toxic to cats and dogs (checked 26 October 2026).

If your pet has eaten a plant, call your vet, the ASPCA Animal Poison Control Center on (888) 426-4435, or the Pet Poison Helpline on (855) 764-7661. Both are open around the clock and may charge a consultation fee. Take the plant or its label with you.

This is general information, not veterinary advice. We don't test plants: what we say about toxicity follows the ASPCA's published plant list as it stood on 26 October 2026, and that list can change. "Non-toxic" means not poisonous — a pet that eats enough of any plant can still vomit, and fertiliser, pesticide or leaf shine on a plant can harm it. It also only helps if the plant is what you think it is. It covers cats and dogs only; ask your vet about rabbits, birds, reptiles or anything else, and a doctor about children. Read our terms.

Every houseplant in the library the ASPCA lists as non-toxic to cats and dogs

Questions people ask

How often should you water a Purple heart?

Water every 6 days as a starting point — that is the cadence PlantParlour sets for Tradescantia pallida. Keep the compost lightly damp. It wilts fast and recovers fast, but repeated wilting costs it the lower leaves. Light, pot size and the time of year all move that number, so treat it as a reminder to go and check rather than a rule.

How much light does a Purple heart need?

Bright indirect light, with an hour of direct sun welcome. The purple, pink and cream stripes wash out to plain green in a dim spot faster than almost any other houseplant.

Is Purple heart toxic to cats and dogs?

Mildly toxic to cats and dogs; the sap can also cause a skin rash in people who handle it a lot. The ASPCA does not list Tradescantia pallida itself, but lists a relative, Inch Plant (Tradescantia flumeninsis), as toxic to cats and dogs (checked 26 October 2026). If a pet has eaten part of a plant, call your vet or the ASPCA Animal Poison Control Center on (888) 426-4435 straight away.

How do you propagate a Purple heart?