Anthracnose

Editorial diagnosis

Diagnosis overview

Anthracnose causes dark, often sunken spots on leaves, shoots, or fruit.

In gardens, Anthracnose can occur on plants including Rubus, Jostaberry. In the available profiles, it is linked mainly with Berries.

Its importance depends on how quickly it spreads and whether seedlings, shoot tips, flowers, or fruit are affected. Conditions that favour it include Wet weather or prolonged leaf wetness, Dense planting and poor airflow, Susceptible cultivars. Anthracnose becomes serious with shoot dieback or many rotting fruit.

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.