The leaves are the most distinctive feature of the plant. They are blue-green, pinnate, and strongly aromatic, divided into smaller leaflets that are often oval or oblong. The leaves have a slightly waxy texture and a bitter taste.

The stems are woody at the base and become greener and more herbaceous towards the top. They are sturdy and can become slightly woody as the plant ages.

Ruta produces small, yellow flowers that bloom in clusters, usually during the summer months.

The plant contains compounds that can cause skin irritation. Ingesting large amounts can cause health problems. It is recommended to wear gloves when handling ruta to prevent skin irritation.