Clubroot

Editorial diagnosis

Diagnosis overview

Clubroot is a long-lasting soil-borne disease of brassicas that creates swollen root galls.

In gardens, Clubroot can occur on plants including Napa cabbage, Choy Sum, Radish, kale. In the available profiles, it is linked mainly with Asian greens, Brassicas, Cabbages. Recorded timing or triggers include Year-round in moist soil.

The recorded risk level is high. Conditions that favour it include Wet weather or prolonged leaf wetness, Dense planting and poor airflow, Susceptible cultivars. Clubroot is serious because it persists in soil for a long time.

Compare upper and lower leaf surfaces, the boundary between healthy and damaged tissue, and spread after wet weather. Coatings, spores, or progressive rot support a disease diagnosis.

A common mistake is to identify a disease from one spot alone; weather, spread, and pathogen structures also need to fit.