LightPurple Heart Plant needs bright, direct light from 250 to…
WaterWater Purple Heart Plant when the topsoil feels dry. Check…
ToxicityToxic to pets
Mature sizeIt grows 1 to 2 ft / 30 to 60 cm tall…
Purple Heart Plant is a trailing evergreen with narrow, boat-shaped leaves in a rich purple shade. Its stems spread readily, creating a dense cascade in pots or hanging containers. Strong light helps maintain the deepest foliage color. It suits growers seeking a fast-growing vine, but its toxic and irritating plant material makes placement important around pets and children.
Care data checked 25 September 2026 · Dany · A-Z Plants
Light requirements
Purple Heart Plant needs bright, direct light from 250 to 1000 μmol·m⁻²·s⁻¹.
Supply 6+ hours of direct sun daily. Place it within 2 ft / 60 cm of a south or southwest-facing window.
Give it an unobstructed view of the sky. Offer afternoon shade during hot direct sun to prevent scorching.
Grow lights can support color in winter when daylight hours shorten. Low light produces greener, weaker growth.
Measure photosynthetically active radiation as PPFD (μmol·m⁻²·s⁻¹) with a PAR meter or PAR meter app.
Watering
Water Purple Heart Plant when the topsoil feels dry. Check the surface and root zone before adding more, since drying speed changes with strong light and warmth.
Use room temperature rainwater, distilled water, or reverse osmosis water.
Water the root ball thoroughly until liquid exits the drainage holes. Let the pot finish draining before placing it on a saucer or inside a decorative planter.
A pot with drainage holes is essential. Saturated soil can cause root rot, while prolonged dryness may leave foliage crisp and stems limp.
Water considerably less during winter when the plant is not actively growing. Avoid leaving the roots constantly wet in cooler conditions.
Soil
Purple Heart Plant grows in an organic all-purpose potting mix that holds moderate moisture while draining freely. Avoid heavy soil that compacts around its roots.
DIY mix: combine 3 parts coir with 1 part pumice.
Add worm castings as a top dressing.
Feeding
Apply an organic all-purpose fertiliser every 2 to 4 weeks from March to October. Use the label strength on damp soil. Avoid excessive feeding, which can create weak growth or root damage. Pause applications when winter growth slows.
Temperature & humidity
Purple Heart Plant tolerates a broad range from 46 to 79 °F / 8 to 26 °C. Protect indoor pots from abrupt cold and hot drafts. Humidity between 40 and 50% suits it and is common in many homes.
What to expect
Purple Heart Plant can take 2 to 5 years to reach full maturity. It grows 1 to 2 ft / 30 to 60 cm tall and spreads 1 to 2 ft / 30 to 60 cm. Its trailing stems can grow and fill space quickly.
Varieties & cultivars
T. pallida ‘Purpurea’: Deep purple leaves tolerate full sun. This fast-growing form can spread across large areas quickly.
T. pallida ‘Variegata’: Striped pink-and-red foliage thrives in full sun with moderate water.
T. sillamontana ‘White Velvet’: An easy evergreen perennial with oval, gray-green foliage that adapts well to indoor conditions.
Purple Heart Plant: questions
Is Purple Heart Plant toxic to cats and dogs?
Purple Heart Plant is considered toxic to people and pets. Contact with its sap may also irritate sensitive skin. Because there is no clear ASPCA ruling specific to Tradescantia…
How much light does Purple Heart Plant need?
Purple Heart Plant needs bright, direct light from 250 to 1000 μmol·m⁻²·s⁻¹. - Supply 6+ hours of direct sun daily. Place it within 2 ft / 60 cm of a south or southwest-facing window. - Give it an unobstructed view of the sky. Offer afternoon shade during hot direct sun to prevent scorching. - Grow…
How often should I water Purple Heart Plant?
Water Purple Heart Plant when the topsoil feels dry. Check the surface and root zone before adding more, since drying speed changes with strong light and warmth. - Use room temperature rainwater, distilled water, or reverse osmosis water. - Water the root ball thoroughly until liquid exits the…
How big does Purple Heart Plant get?
Mature size indoors: It grows 1 to 2 ft / 30 to 60 cm tall….
