Russeting

Russeting shows up as rough, corky brown patches on fruit or leaf surfaces where the outer skin cells have been damaged. It is not caused by a pathogen. In Western Washington, russeting on apples, pears, and ornamentals like loropetalum typically results from cold exposure during bloom, chemical spray injury, or sustained moisture sitting on young fruit. The damage is cosmetic, not structural, so the fruit is still edible and the plant is fine. Avoiding overhead watering during bloom and being careful with spray timing are the simplest preventive steps.

Management depends on catching it early. Scout susceptible plants regularly and remove affected tissue before the pathogen can spread. Improve growing conditions by addressing drainage, spacing, and irrigation practices. For persistent or severe cases, contact your local Master Gardener program or Extension office for treatment options specific to your host plants.