Gray mold

Editorial diagnosis

Diagnosis overview

Grey mould is a rot disease of humid plantings and forms grey fuzzy mould.

In gardens, Gray mold can occur on plants including Physalis pruinosa, Physalis peruviana, Cynara scolymus, iceberg lettuce. In the available profiles, it is linked mainly with Berries, Cucurbits, Fruit.

The recorded risk level is medium to high. Conditions that favour it include Wet weather or prolonged leaf wetness, Dense planting and poor airflow, Susceptible cultivars. Grey mould becomes serious in dense damp plantings where it spreads quickly.

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.