Chinese croton Care (Excoecaria cochinchinensis)

Also known as: Blindness tree
Chinese croton

About Chinese croton

Chinese croton (Excoecaria cochinchinensis) is a tropical evergreen shrub grown mainly for its colorful foliage rather than flowers. It usually has glossy green leaves on top with rich red or purple undersides, creating strong contrast in indoor light.

In nature it occurs in warm, humid regions of Southeast Asia, often in shaded forest edges. As a houseplant it stays compact and responds well to pruning, which helps maintain a dense shape.

This species prefers bright, indirect light, evenly moist but not waterlogged soil, and stable warmth. With these conditions, it is relatively straightforward to care for Chinese croton for most home growers.

Main Plant Requirements

Care Difficulty

Moderate Care

Light Preference

Bright Indirect Light

Water Requirements

Keep Soil Moist

Temperature Preference

Tropical / Frost Sensitive

Hardiness Zone

10–11

Soil Texture

Loamy, Organic-rich

Soil pH

Acidic (5.5–6.5), Slightly acidic (6.5–7.0)

Soil Drainage

Moist but well-drained

Fertilization

Light (every 4–6 weeks)

Get Personalized Care Plan

Scan your plant to receive care tips personalized for your specific plant

Available on iOS and Android

How to Care for the Chinese croton

This shrub prefers bright, filtered light that mimics an understory tropical habitat.

  • Provide 3–5 hours of gentle morning sun with bright shade or dappled light the rest of the day, especially in warm climates.
  • Protect Chinese croton from harsh midday and afternoon sun, which can scorch leaves and fade color; use shade cloth or site it under open tree canopies.
  • In deep shade growth becomes sparse and leggy; move it to a brighter spot or thin overhead cover, especially in low-light winter months.

Excoecaria cochinchinensis prefers evenly moist but not saturated soil.

  • Water when the top 3–5 cm of soil feels dry, then soak thoroughly so water reaches the root zone, allowing excess to drain away.
  • Use well-draining soil rich in organic matter; prolonged puddling, sour smell, or yellowing, mushy leaves indicate overwatering and poor drainage.
  • In cooler seasons reduce frequency as growth slows; crisp leaf edges and dull, drooping foliage usually signal underwatering and a need for a deep soak.

This species comes from warm, frost-free regions and needs consistently mild temperatures.

  • Aim for 65–85°F (18–29°C) for best growth, with stable conditions and minimal sudden swings between day and night.
  • Avoid temperatures below 45°F (7°C); brief dips may cause leaf drop, and any frost can kill young shoots or entire plants.
  • In hot spells above 90°F (32°C), give extra shade and airflow to limit leaf scorch, and avoid planting where reflected heat builds up from walls or pavement.

This species favors moderately humid air and reacts if conditions are too dry.

  • Aim for 50–60% humidity, as very dry, heated rooms can dull foliage and slow growth.
  • Tolerates short dry spells, but prolonged low humidity may cause leaf-edge browning and increased leaf drop.
  • Increase humidity by grouping plants, using a pebble tray with water below the pot base, or running a small room humidifier nearby.

This plant prefers a loose, moisture-retentive but fast-draining substrate.

  • Use a peat- or coco-based mix amended with perlite and fine bark to create a light, airy structure.
  • Ensure rapid drainage; water should flow through freely without pooling on the surface or in the saucer.
  • A slightly acidic to neutral pH around 6.0–7.0 supports nutrient availability for Excoecaria cochinchinensis.
  • Avoid dense, heavy garden soil or mixes with high clay content, which restrict roots and increase rot risk.

This species is well suited to container culture when root space and drainage are managed carefully.

  • Choose a pot only 2–4 in wider than the root mass to keep the substrate from staying wet for long periods.
  • Select a heavier ceramic or clay container if the plant becomes top-heavy, to reduce tipping risk outdoors or on balconies.
  • Elevate the pot slightly on pot feet or blocks so drainage holes stay clear and excess water leaves the container quickly.

This foliage shrub responds well to modest, consistent feeding during the warm growing season.

  • Use a balanced liquid fertilizer (such as 10-10-10 or 20-20-20) diluted to 1/2–1/4 strength every 4–6 weeks in spring and summer.
  • Alternatively, apply a slow-release balanced fertilizer at the start of the growing season for container plants.
  • Avoid feeding in late fall and winter when growth slows, especially for Chinese croton grown indoors.
  • On outdoor plants in the ground, light compost around the root zone once a year is usually sufficient.

Pruning helps maintain compact, colorful growth on Excoecaria cochinchinensis and keeps stems from becoming leggy.

  • Carry out main pruning in late winter or early spring before active growth starts.
  • Remove dead, damaged, crossing, or very crowded stems to improve light penetration and air flow.
  • Tip back long shoots by a few nodes to encourage branching and a fuller shape.
  • Use clean, sharp scissors or hand pruners, wiping blades with alcohol to limit disease spread.

This species grows moderately in containers and benefits from occasional repotting to refresh soil and manage root crowding.

  • Check for roots circling the pot, emerging from drainage holes, or for slowed growth as signs it needs a larger container.
  • Plan repotting for spring, every 2–3 years for young plants, moving to a pot 2–5 cm wider with fresh, well-drained mix.
  • Water lightly the day before, then gently loosen the root ball and trim only tightly circling roots to reduce stress.
  • After repotting, water thoroughly once, keep in bright but indirect light for 1–2 weeks, and avoid feeding until new growth appears.

New plants are most reliably produced from stem cuttings taken during the warm growing season.

  • In late spring to summer, take 8–12 cm non-flowering stem cuttings with at least 2–3 nodes.
  • Remove lower leaves, optionally dip the cut end in rooting hormone, and place in a moist, well-drained mix such as perlite and peat or coco coir.
  • Maintain high humidity (cover with a clear dome or bag) and bright, indirect light at 70–80°F for steady rooting.
  • Once roots reach 2–3 cm and new growth appears, pot each cutting individually and gradually reduce humidity.

This tropical shrub is frost sensitive and needs protection in regions with cool winters.

  • In USDA zones below 10, grow Excoecaria cochinchinensis in containers so plants can be moved indoors before temperatures drop below 50°F.
  • Indoors, provide bright, indirect light and reduce watering slightly while avoiding complete soil dryness.
  • In mild climates, apply a 5–8 cm mulch layer around outdoor plants to insulate the root zone.
  • Keep foliage away from cold drafts, unheated windows, and sudden temperature swings to limit leaf drop.

Care Tips

Encourage Bushy Shape

Pinch out the very tips of young stems every 4–6 weeks to promote dense branching and richer color on the new foliage, rather than allowing the plant to grow tall and sparse.

Refresh Old Wood

Each spring, selectively cut 1–3 of the oldest, woodiest stems back to 5–8 cm above the soil to stimulate fresh basal shoots and maintain a compact, ornamental form over several years.

Rotate For Even Color

Turn the pot 90° every 1–2 weeks so all sides receive similar light exposure, which helps prevent lopsided growth and encourages even red coloration on the leaf undersides.

Safe Handling Practice

Wear disposable gloves when pruning or repotting and avoid touching your face, since the milky sap can irritate skin and eyes; rinse tools after use to remove residue.

Prevent Sap Drip Issues

When trimming, place the plant on a tray lined with newspaper or paper towels to catch any dripping sap, then discard the lining afterward to keep indoor surfaces clean while caring for Chinese croton.

Common Pests and Diseases

Spider mites

This pest often appears on stressed plants grown in warm, dry indoor air, causing fine stippling on leaves and dulling the red undersides. Symptoms include fine webbing between leaves and gradual leaf drop if populations build up.

Solution

Increase humidity around the plant, rinse foliage thoroughly with a strong but gentle stream of lukewarm water, and repeat every few days. For persistent infestations, use insecticidal soap or a ready-to-use horticultural oil, coating the undersides of leaves and repeating according to label directions as part of Excoecaria cochinchinensis care instructions.

Scale insects

These insects attach to stems and leaf midribs as small, brown or tan bumps and feed on sap, causing yellowing leaves and sticky honeydew. Sooty mold may develop on the honeydew, making foliage look dirty or blackened.

Solution

Physically remove scales by gently scraping with a fingernail or cotton swab dipped in isopropyl alcohol, then wipe stems and leaf midribs. Follow up with 2–3 applications of insecticidal soap or light horticultural oil at 7–10 day intervals, ensuring good coverage of stems and leaf undersides.

Mealybugs

This pest forms white, cottony clusters in leaf axils, on stems, and sometimes along roots, weakening the plant as it feeds on sap. Symptoms include distorted new growth, sticky residue, and a general decline in vigor.

Solution

Isolate the affected plant, then dab visible mealybugs with cotton swabs dipped in isopropyl alcohol and wipe away cottony masses. Repeat inspections weekly and treat remaining insects with insecticidal soap or a low-rate horticultural oil, ensuring the spray reaches hidden areas where mealybugs shelter.

Leaf spot

This disease causes small, water-soaked or tan to dark-brown spots on leaves, sometimes with a yellow halo, which can merge into larger blighted areas. Symptoms include premature leaf yellowing and drop, especially in dense, poorly ventilated foliage.

Solution

Remove and discard affected leaves and any fallen debris, then improve air movement around the plant and avoid wetting the foliage when watering. If new spots continue to appear, apply a broad-spectrum fungicide labeled for ornamental foliage plants, following directions carefully and spacing future waterings to let leaves dry quickly.

Sooty mold

This disease develops as a black, powdery or velvety coating on leaves and stems, growing on the sugary honeydew excreted by sap-sucking insects like scale, mealybugs, or aphids. Symptoms include reduced light reaching the leaves and a dull, dirty appearance, which can limit photosynthesis over time.

Solution

First control the underlying insect infestation, then gently wipe leaves with a soft damp cloth or rinse the plant with lukewarm water to remove the mold. Improve air circulation and light levels, and monitor for any return of honeydew-producing insects, treating promptly if they reappear.

Interesting Facts

Two-tone leaf strategy

This species has glossy green upper leaf surfaces and deep red to purple undersides, which help capture and use light efficiently in shaded understory habitats by reflecting red light back through the leaf tissue.

Irritant milky latex

The plant produces a white, milky sap that can irritate skin and especially eyes; this latex is characteristic of the spurge family Euphorbiaceae and likely evolved as a defense against herbivores.

Sexes on separate plants

Excoecaria cochinchinensis is dioecious, meaning individual plants are either male or female, so both sexes must be present and flowering at the same time for viable seed production.

Botan icon

Did you know?

In parts of tropical and subtropical Asia, this shrub has been widely adopted as a dense ornamental hedge and foliage plant, valued more for the contrasting red and green foliage than for its small, inconspicuous flowers, which has contributed to its spread far beyond its native range.

FAQs about Chinese croton

Yellowing leaves usually result from overwatering, poor drainage, or sudden temperature changes. Check the root zone for sogginess, improve drainage, remove affected leaves, and allow the topsoil to dry slightly more between waterings to stabilize growth.

Grow Healthy Plants with Botan Care

Keep your plants happy and healthy with plant identification, disease detection, and easy care guidance.

Botan plant care app — identify plants on mobile

Explore More Plants