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The Hidden Purple Crown

Oyster Plant

Tradescantia spathacea - green form

Green upper leaves and purple reverses form an upright oyster-plant rosette. Give this leafy crown bright filtered light, with a freely draining pot and surface drying between waterings.

Explore the care guide
Botanical illustration

Care at a glance

Know your plant

Tradescantia spathacea belongs to the Commelinaceae family. Rhoeo spathacea and Rhoeo discolor are historical names for the species. [10]

The common reference form has upright rosettes of narrow leaves, green above and purple beneath. [13]

Light

Choose bright filtered light indoors. Protect the foliage from scorching direct sunshine. [11]

Watering

  1. Feel the upper one to two inches of mix; water after this surface layer has dried. [12]

  2. Water evenly, let excess escape, then empty the saucer or cover pot. [1]

Soil and pot choice

Use a porous, draining houseplant mix and a pot with drainage holes. [1][2]

Temperature and humidity

Keep the plant away from cold drafts and hot radiators. [3]

In very dry indoor air, a room humidifier can raise humidity around houseplants. [8]

Feeding

During active growth, apply a liquid houseplant fertilizer monthly, following its label. Pause feeding when growth rests. [11][8]

Repotting

  1. Repot when roots crowd the container. Choose a slightly larger pot. [8][2]

  2. Use fresh medium, keep the plant at its existing depth and water it in. Let excess drain. [2]

Propagation

  1. If rooted basal shoots are present, gently separate a section retaining healthy leaves, stems and attached roots. [13][9]

  2. Pot the rooted section in fresh, draining mix at its existing depth. Water it in and let excess drain. [2][1]

  3. An accessible stem tip offers another propagation method. [11]

  4. Take a node-bearing stem tip and remove its lower leaves. Insert at least one node into moist rooting medium, keeping the remaining leaves above it. [15]

  5. Keep the cutting warm in bright indirect light, with moist medium and humid air while roots develop. [15]

Pruning and foliage care

Remove stems after their flowers have faded. [11]

Problems and checks

Wilt or yellowing

Possible causes
  • Moisture stress or root damage.
Checks to distinguish them
  • Check moisture and drainage.
Low-risk next step
Water dry roots; restore drainage around persistently wet roots.
When to seek expert help
Seek advice for soft roots or continued decline.
Sources for these checks

Check moisture first. [3]

Scorched leaf patches

Possible causes
  • Excessive direct sun.
Checks to distinguish them
  • Check sun exposure.
Low-risk next step
Move behind filtered light.
When to seek expert help
Seek advice if injury spreads.
Sources for these checks

Review light exposure. [3]

Cottony clusters, bumps or webbing

Possible causes
  • Mealybugs, scale or mites.
Checks to distinguish them
  • Inspect leaf undersides and stem joints.
Low-risk next step
Separate the plant; identify the pest before treatment.
When to seek expert help
Seek advice for a spreading infestation.
Sources for these checks

Inspect pest signs closely. [4]

Seasonal indoor care

Reduce watering frequency in winter, while continuing to check the mix. [11]

Children and pets

Safety

NC State warns that eating oyster plant or contacting its sap can harm pets. [12]

Veterinary guidance lists Tradescantia species among causes of allergic contact dermatitis. Keep pets from chewing or rubbing against oyster plants. [16][12]

Keep plants, fallen leaves and cuttings away from pets that chew them. [12]

Eating oyster plant can irritate the mouth and throat. [12]

Wear gloves when cutting, and keep sap away from skin and eyes. [11][12]

For suspected poisoning or signs of illness, contact your veterinarian or ASPCA Poison Control at 888-426-4435. Provide the botanical name. [5]

Keep plants, cuttings and loose potting material beyond young children's reach. Keep the botanical name with the pot. [6]

For human plant ingestion in the United States, call Poison Control at 1-800-222-1222. Elsewhere, contact your local poison service. Call emergency services for breathing difficulty, seizures, collapse or inability to awaken. [7]

Similar plants

The common green oyster-plant form has plain upper foliage with purple undersides. [13]

The Tricolor collection reference has green, pink and cream upper foliage with purple undersides. [14]

Sources

  1. Watering Indoor Plants

    University of Maryland Extension

    Accessed October 5, 2026 · Updated: 2023-03-10

  2. Repotting houseplants

    University of Illinois Extension

    Accessed October 5, 2026

  3. Diagnosing Houseplant Problems from Improper Environmental Conditions

    Iowa State University Extension and Outreach

    Accessed October 5, 2026 · Updated: Last reviewed January 2024

  4. Diagnosing Houseplant Problems Caused by Insect Pests

    Iowa State University Extension and Outreach

    Accessed October 5, 2026 · Updated: Last reviewed January 2024

  5. ASPCA Poison Control

    ASPCA Poison Control

    Accessed October 5, 2026

  6. Poisonous and non-poisonous plants: An illustrated list

    National Capital Poison Center

    Accessed October 5, 2026

  7. Get help online or by phone

    National Capital Poison Center

    Accessed October 5, 2026

  8. How to Care for Houseplants

    Iowa State University Extension and Outreach

    Accessed October 5, 2026 · Updated: Last reviewed October 2023

  9. How to Propagate Houseplants by Division and Offsets

    Iowa State University Extension and Outreach - Aaron Steil

    Accessed October 5, 2026 · Updated: Last reviewed January 2025

  10. Tradescantia spathacea Sw. - Plants of the World Online

    Royal Botanic Gardens, Kew

    Accessed October 5, 2026

  11. Tradescantia spathacea - RHS Plant Profile

    Royal Horticultural Society

    Accessed October 5, 2026

  12. Tradescantia spathacea - Extension Gardener Plant Toolbox

    NC State Extension

    Accessed October 5, 2026

  13. Tradescantia spathacea - Flora & Fauna Web

    National Parks Board, Singapore

    Accessed October 5, 2026 · Updated: 2022-10-02

  14. Tradescantia spathacea Tricolor - collection EGY-MBG-001279

    Mazhar Botanic Garden

    Accessed October 5, 2026

  15. How to Propagate Houseplants by Stem Tip Cuttings

    Iowa State University Extension and Outreach - Aaron Steil

    Accessed October 5, 2026 · Updated: Last reviewed January 2025

  16. Allergic Contact Dermatitis

    Melbourne Veterinary Specialist Centre - Animal Referral and Emergency Network

    Accessed October 5, 2026