DiseaseHigh Severity

Phytophthora palmivora

A devastating water mold pathogen that causes root rot, stem cankers, and crown rot in palms and many other tropical and subtropical plants. This oomycete thrives in wet conditions and causes rapid plant decline.

Peak Season: Most active during warm, wet conditions. Favored by high humidity and standing water.

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Phytophthora palmivora infection showing characteristic water-soaked lesions and tissue damage on palm tissue

Identification & Symptoms

What to Look For

Yellowing and wilting of fronds

Dark, water-soaked lesions on stems

Root rot with black, mushy roots

Crown rot in palm trees

Sudden collapse of infected plants

Potential Damage

Rapid root system destruction

Vascular blockage and plant death

Crown rot leading to palm mortality

Secondary infections in weakened plants

Lifecycle

Produces swimming zoospores in wet conditions that infect through wounds or natural openings. Can survive in soil and plant debris for extended periods.

Professional Treatment Approach

Improve drainage around affected plants

Apply systemic fungicide treatments

Remove infected plant material

Avoid overhead watering

Use pathogen-free planting material

Recommended Mauget Products

Fungisol

Professional-grade treatment specifically effective against phytophthora palmivora.

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Abasol

Professional-grade treatment specifically effective against phytophthora palmivora.

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Arborfos

Professional-grade treatment specifically effective against phytophthora palmivora.

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