Crown Rot


Crown Rot

Phytophthora cactorum


In a Nutshell

    Leaves turn brown, starting with the heart leavesRotten spots appear in rootsOnly single plants in larger plantation are affected

Hosts: %1$s

· Grape · Strawberry


After an infection with Crown Rot, single leaves start to turn brown. Starting with the heart leaves, the aerial plant parts wither and finally die off. Inside the root, you can find clearly delimited, red brown, rotten spots. These are causing the disruption of the plants water provision. The symptoms of Crown Rot appear in spring, very soon after blossom. Healthy plants growing in the immediate neighborhood of infected plants, which is typical for the disease. In warm spring weather, first losses appear after 4-6 weeks.


The Crown Rot pathogen is a fungus (Phytophthora cactorum) that can survive in the soil for years. Its zoospores depend on free water to spread and are be distributed by splashing water. Waterlogging is a common source of Root Rot fungus infection.

Biological Control

No direct treatment is possible. Apply preventive measures to avoid infection.

Chemical Control

Always consider an integrated approach with preventive measures together with biological treatments if available. Apply Mefenoxam and Metalaxyl by drip irrigation to contaminated areas to prevent reinfections.

Preventive Measures

    Plant in well-drained areasAvoid overwateringAvoid direct contact of leaves or fruits with the soilUse wood wool or straw as underlaysDo not plant in contaminated areasUse resilient varieties


Regional Weather

Get detailed forecast and actual weather data.

Plantix offers detailed weather information on the following issues:



Air Pressure


Wind speed

Plantix Community

Get in touch with experts around the world.

Post your questions

You can post your questions and pictures and get feedback from other farmers or gardeners. Plantix' experts will answer your questions related to plant diseases and pests.


Exchange with Plantix users around you, in your language and related to the crops you grow.

Global Community

Connect to farmers, gardeners, experts and interested people around the world that discuss plant diseases, remedies and best practice for sustainable farming.

AI-Driven Disease Detection

Instant diagnostics and solutions based on your picture

Image Recognition

Plantix analyzes your picture within a few seconds and gives you instant feedback on your plant problem.

Customized Management Options

On top of the detection result, Plantix offers you a detailed description of possible solutions - both biological and conventional.

Preventive measures

Plantix offers information on preventive measures to protect your crop from the next attack.