Rue
Rue, a bitter herb with a strong aroma, was once widely used in traditional medicine and cooking. However, it is now less common due to its toxicity and potential skin irritant properties. It is often grown for its ornamental, blue-green foliage.
Sun: Full sun.
Soil: Well-drained, average to poor soil.
Hardiness: H5 — down to −15°C.
Flowering: Jun, Jul, Aug.