Gloxinia Diseases

Informational table showing disease name, symptoms, pathogen/cause, and management of Gloxinia diseases.
Gloxinia Diseases - Articles


Boron DeficiencySmall, dark brown to black irregularly shaped spots form at the leaf base of seedlings. Plants wilt and die as the browning spreads up the leaf blade. On older plants, flower stalks are short and wilted. Plants die.Lack of boronApply boron.
Botrytis BlightSmall water-soaked lesions form on damaged petioles and spread to leaf blades. Infected flowers fade prematurely.Botrytis cinereaSpace plants and provide ventilation to avoid high humidity. Remove fading flowers and yellowing leaves. Apply a fungicide to protect plants.
Foliar NematodeSmall tan, sunken areas form on leaf tips and margins. Spots become dry and dull black.Aphelenchoides ritzema-bosiDestroy infected plants. Water plants in a manner that keeps leaf surfaces dry and does not splash from plant to plant.
Myrothecium RotPetioles of lower leaves develop darkened spots. Spots enlarge down stems and stems are easily broken.Myrothecium roridumPlant in pasteurized media. Maintain moderate temps. and low humidity. Apply a fungicide to protect plants.
Phytophthora Crown RotCrowns and roots have a dark, water-soaked appearance. This spreads to petioles and leaf blades. Young plants are quickly killed. Rhizomes of mature plants resprout but eventually succumb.Phytophthora nicotianae, P. cryptogeaDo not propagate from infected plants. Pot in pasteurized media. Destroy infected plants. Apply a fungicide to protect plants.
Pythium Root RotRoots are dark brown. Plants wilt, yellow and die.PythiumDo not overwater plants. Pot in pasteurized media. Keep hose ends off the ground. Apply a fungicide to protect plants.
VirusesLeaves may be downwardly cupped, mottled, or strap shaped. Leaves may have line or ringspot patterns. Shoots may be elongated.Tobacco mosaic, tomato ringspot, and impatiens necrotic spot virusMaintain good thrips control. Do not take cuttings from infected plants. Destroy infected plants. Eliminate weeds within the production area. Use very fine mesh screen to keep thrips out. Do not use tobacco products when handling plants.

Impatiens necrotic spot virus symptoms

Prepared by Gary W. Moorman, Professor of Plant Pathology