Articles

Calceolaria Diseases

Name: Calceolaria Diseases
SKU: ART-3286

Informational table showing disease name, symptoms, pathogen/cause, and management of Calceolaria diseases.

Updated:

June 26, 2025

Calceolaria plant in flower

Disease	Symptoms	Pathogen/Cause	Management
Botrytis Blight	Leaves, especially those near the soil surface, rot and become covered with gray fungal growth as do fading flowers.	Botrytis cinerea	Heat and ventilate to maintain low humidity. Remove dead and dying tissue from the greenhouse. Apply a fungicide to protect plants.
Phytophthora Root and Crown Rot	Crowns and roots have dark brown spots at the soil level. This spreads up the stem as plants wilt and die. Roots are killed.	Phytophthora spp.	Plant in pasteurized potting mix. Discard infected plants. Apply a fungicide to protect plants.