Botanic Garden >> Gardening > >> Question and Answer >> Plant Species >> Violets

Tiny Black Specks on African Violet: Insect Frass, Sooty Mold, or Aphids?

A grower found tiny black specks on their African violet and asked for identification.

Three Main Possibilities

Insect frass (droppings): Check if specks move or blow away. Could be from caterpillars or other chewing insects.
Sooty mold: Black fungal growth on sticky honeydew from aphids/scale. Look for ants (farm aphids) or green aphids on flowers/new growth.
Aphids: Visible greenish bugs, squishable between fingers. Produce honeydew leading to sooty mold.

Action Steps

Inspect thoroughly with magnification. Treat aphids with insecticidal soap or manual removal. Sooty mold resolves when insects are controlled. Frass indicates a chewing pest—search plant and surroundings.

More Info Needed

Speck behavior (movement, blow-off), presence of ants/aphids, and plant location help narrow diagnosis.

Violets: African Violet Leaf Bleaching and Spotting: Sunburn or Water Damage?; Curling African Violet Leaves with Fuzz: Fungal Disease or Cultural Stress?; Inherited African Violets: Repotting, Propagating Leaves, and Long-Term Care; African Violet Flower Color Change: Genetic Expression in Hybrid Plants; Moldy-Smelling African Violet Soil: Is Repotting Necessary?; Identifying and Treating Insects on African Violets; Repotting an African Violet with a Long Neck; African Violet with Hairy New Leaves and Failed Blooms: Powdery Mildew or Mealybugs?; African Violet Care: Year-Round Blooms, Varieties, and Toxicity; African Violet – Classic Fuzzy-Leaved Bloomer

Garden Articles

Whiteflies on African Violets: Identification, Treatment, and Prevention

Drooping African Violet in Cool Temperatures: Heat Requirements

African Violet Pests in Self-Watering Pots: Emergency Rescue

African Violet Decline After Repotting: Pest and Soil Investigation

African Violet Rest Period: When Blooms Stop But Plant Is Healthy

Divided African Violet Still Traumatized After 6 Weeks: Recovery or Loss?

To Repot or Not? The African Violet Dilemma

Plants

African Violet Fungus: Botrytis from Wet Leaves

White Powder on African Violet Leaves: Mealybugs, Not Fungus—Easy Fix with Neem Oil

African Violet Propagation Timeline: From Leaf to Bloom

Repotting African Violets in Full Bloom: Acceptable with Bloom Removal

Why African Violet Leaves Grow Upward or Downward

Recurring African Violet Deaths in Same Pot: Crown Rot Suspected

Troubleshooting Small, Washed-Out Blooms on One African Violet