Lychee Prone to Anthracnose: How to Protect

Litchi chinensis

Susceptibility: High Severity: High Difficulty: Medium

Anthracnose on Lychee: What to Know?

Anthracnose on Lychee (Litchi chinensis) is a fungal condition with high severity. Lychee has high susceptibility to this disease. Anthracnose is a fungal disease caused by fungi in the genus Colletotrichum that affects many plants, including vegetables, fruits, and trees. The disease thrives in cool, wet conditions, causing dark...

Lychee is a medium-care plant. Recovery from Anthracnose takes approximately 14 days with proper treatment.

Lychee is highly susceptible to Anthracnose, unlike most plants in the same family. Without early intervention, recovery takes 21 days instead of 14 days. Unlike bacterial infections, Anthracnose on Lychee can be managed with organic fungicides.

🔍 What Does Anthracnose Look Like on Lychee?

• Small irregular yellow or brown spots on leaves
• Dark sunken lesions on leaves, stems, flowers and fruits
• Water-soaked lesions that darken as they age
• Pink gelatinous masses of spores in lesion centers during warm, moist weather
• Spots that expand and may cover entire leaves
• Defoliation in advanced stages

❓ What Causes Anthracnose on Lychee?

→ Caused by fungi in the genus Colletotrichum
→ Cool wet weather promotes development
→ Optimum temperature between 75-85°F (24-29°C)
→ Foliage wet for extended periods of time
→ Fungi overwinter in seeds, soil and garden debris
→ Spores spread through water droplets

💊 How to Treat Anthracnose on Lychee?

TLDR: Treat Anthracnose on Lychee with quick treatment (~7 days) or organic (~14 days). Lychee has high susceptibility to this disease.

⚡

Quick Fixes

Remove and discard all visibly infected parts

Apply commercial systemic fungicide (azoxystrobin or mancozeb)

Adjust irrigation to avoid wetting foliage

Second application of systemic fungicide

Assess treatment effectiveness

🌿

Organic Treatment

Remove all infected plant parts and discard in plastic bag

Apply organic liquid copper spray to all plant surfaces

Switch irrigation regime to drip, avoiding foliage wetting

Second application of copper fungicide or neem oil

Assess progress and remove any new lesions

Final organic fungicide application and ongoing monitoring

🛡️ How to Prevent Anthracnose on Lychee?

TLDR: Prevent Anthracnose on Lychee with 8 essential preventive care practices.

✓ Implement drip irrigation instead of overhead watering
✓ Give plants enough room to breathe and reduce humidity
✓ Remove infected plant material after harvest
✓ Practice crop rotation between hosts and non-hosts
✓ Choose resistant plant varieties when possible
✓ Use western grown seeds not exposed to the disease
✓ Avoid wetting foliage during watering
✓ Ensure good air circulation around plants

🌱 How to Care for Lychee to Prevent Anthracnose?

💧 How to Water

Water lychee every 5 days on average, keeping the soil consistently moist without waterlogging. Increase frequency during dry spells in the growing season. Reduce watering in winter to stimulate flowering. Avoid overwatering, which can lead to root rot.

☀️ Lighting

Lychee requires full sun — at least 6 to 8 hours of direct sunlight daily. In subtropical and tropical climates, it thrives outdoors. Insufficient light significantly reduces fruit production and overall vigor.

🪴 Ideal Soil

Prefers well-draining, slightly acidic soil (pH 5.5–7.0) rich in organic matter. Avoid compacted or poorly drained soils. Incorporating compost improves soil structure and fertility for better fruit production.

Frequently asked questions

Can Anthracnose kill my Lychee?

Yes, without treatment, Anthracnose can be fatal to Lychee. Early detection and treatment are key.

How long does Lychee take to recover from Anthracnose?

With proper treatment, recovery takes approximately 14 days. Without treatment, it can take significantly longer.

Is Anthracnose contagious to other plants near Lychee?

Yes, Anthracnose can spread to nearby plants. Isolate the affected Lychee immediately.

See more: Lychee → See more: Anthracnose →