Identifying and Treating Insects on African Violets

Identifying and Treating Insects on African Violets

A gardener noticed tiny black insects on their African violets while preparing to water them. The bugs appeared to come from the soil, but closer inspection suggested they might also be on the undersides of leaves. The plants were otherwise healthy and about to bloom.

What Are These Insects?

Small black insects on African violets are often fungus gnats, shore flies, or possibly thrips. Fungus gnats thrive in moist soil and their larvae feed on organic matter and roots. Shore flies are similar but have stouter bodies. Thrips are slender and can cause leaf distortion. Proper identification is key to choosing the right treatment.

Safe Treatment Options

Since outdoor pesticides may be too harsh, use products specifically labeled for African violets. Insecticidal soaps, neem oil, or systemic granules designed for houseplants are effective. Dilute any spray to 50% strength as a precaution. Apply thoroughly, covering leaf undersides and drenching the soil. Treat plants outdoors or in a bathtub to avoid mess. Use lukewarm water to prevent leaf spotting.

Prevention Tips

• Allow soil to dry slightly between waterings to discourage fungus gnats.
• Use yellow sticky traps to monitor flying adults.
• Quarantine new plants before adding them to your collection.
• Keep the growing area clean and free of decaying plant material.

With prompt action, your violets can continue thriving and bloom beautifully.