Tanacetum parthenium aureum (Lus deartán) As the common name suggests, Golden Feverfew was traditionally used to combat fevers and inflammation. A naturalised and strongly scented perennial here in Ireland, Feverfew has ovate, lobed lime-green leaves and white daisy-like flowers of about an inch in diameter from June into August. Site: Tolerates exposureSoil: Any well-drainedPosition: Full sunSeason of Interest: Edible leavesHardiness: Fully hardyHeight: up to 2ft (0.6m) Spread: up to 2ft (0.6m)