DiseaseHigh Severity

Phytophthora spp.

A genus of water mold pathogens that cause various diseases including root rot, crown rot, cankers, and leaf blights on many plant species. These oomycetes thrive in wet conditions and cause significant agricultural and forestry losses.

Peak Season: Most active during cool, wet periods in spring and fall. Trees most vulnerable during bloom period. Can remain active year-round in mild, wet climates.

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Phytophthora species showing characteristic water-soaked lesions and tissue damage typical of this water mold pathogen genus

Identification & Symptoms

What to Look For

Root rot with black, mushy roots

Crown rot and stem cankers

Leaf spots and blights

Water-soaked lesions on stems and foliage

Rapid plant decline and wilting

Potential Damage

Extensive root system destruction

Vascular blockage leading to plant death

Economic losses in agriculture and forestry

Ecosystem disruption in natural settings

Lifecycle

Produces swimming zoospores in wet conditions. Can survive in soil, water, and infected plant material for extended periods.

Professional Treatment Approach

Improve drainage and avoid overwatering

Apply systemic fungicide treatments

Remove infected plant material

Use pathogen-free planting stock

Implement quarantine measures for exotic species

Recommended Mauget Products

Arborfos

Professional-grade treatment specifically effective against phytophthora spp..

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Fungisol

Professional-grade treatment specifically effective against phytophthora spp..

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Abasol

Professional-grade treatment specifically effective against phytophthora spp..

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