Guava Tree Prone to Anthracnose: How to Protect

Psidium guajava

Susceptibility: High Severity: High Difficulty: Medium

Anthracnose on Guava Tree: What to Know?

Anthracnose on Guava Tree (Psidium guajava) is a fungal condition with high severity. Guava Tree 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...

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

Guava Tree 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 Guava Tree can be managed with organic fungicides.

🔍 What Does Anthracnose Look Like on Guava Tree?

• 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 Guava Tree?

→ 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 Guava Tree?

TLDR: Treat Anthracnose on Guava Tree with quick treatment (~7 days) or organic (~14 days). Guava Tree 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 Guava Tree?

TLDR: Prevent Anthracnose on Guava Tree 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 Guava Tree to Prevent Anthracnose?

💧 How to Water

Keep the soil consistently moist but never waterlogged, especially during growth and fruiting periods. Reduce watering frequency during colder or rainy seasons. Check soil moisture before watering by inserting your finger a few inches deep.

☀️ Lighting

Plant the guava tree in a location that receives at least 6 to 8 hours of direct sunlight per day to ensure abundant flowering and fruiting, as well as vigorous development.

🪴 Ideal Soil

The guava tree prefers fertile, well-drained soils rich in organic matter. A pH between 5.0 and 7.5 is ideal. Avoid heavy clay soils that retain excess water, as they can cause root rot.

Frequently asked questions

Can Anthracnose kill my Guava Tree?

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

How long does Guava Tree 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 Guava Tree?

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

See more: Guava Tree → See more: Anthracnose →