Hibiscus Flowers Closing at Night: Normal Behavior and Ant Management

Hibiscus Nyctinasty and Ants

Hibiscus flowers naturally close at dusk (nyctinasty)—this is normal. Ants on the plant are farming aphids or seeking nectar; they don't harm the hibiscus directly.

Ant Control

• Apply a sticky barrier (Tanglefoot) around the pot rim.
• Or place ant bait stations on the soil surface.

Enjoy the hummingbirds! Your plant is healthy and behaving normally.