Valerian, common (Caorthann corraigh)

Also known as Wild Valerian, this is a graceful perennial, native wildflower that can be found throughout Ireland, especially alongside rivers and in meadows. Valeriana officinalis can be a tall plant however its height tends to vary depending on soil conditions, and can shoot up to 1.5m high in damp places. From June to September, pale-pink, sometimes white flowers form in dense clusters on thick stems, which branch out. Its pinnate leaves have a unique scent. 

Site: Tolerates exposure
Soil: Moist 
Position: Full sun to part shade
Season of Interest: Scented foliage, pink or white flower clusters Jun-Sept
Hardiness: Fully hardy
Height: 3-5ft (1-1.5m) Spread: 3ft (1m)