The leaves are the most distinctive feature of the plant. They are bluish-green, feathery, and highly 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, turning greener and more herbaceous towards the top. They are sturdy and can become slightly woody as the plant matures. Rue produces small, yellow flowers that bloom in clusters, typically during the summer months.

The plant contains compounds which can cause skin irritation. Ingesting large quantities can lead to health issues. It’s recommended to wear gloves when handling rue to avoid skin irritation.