European meadowsweet (Spiraea ulmaria - also known as Filipendula ulmaria) is a perennial herb that grows in meadows, at the edges of ponds, on riverbanks and in damp woodlands. It produces a fragrant, brush-like cluster of small, pink or creamy white flowers, and is an important medicinal herb with a long history of use, ever since the Bronze Age.

Meadowsweet is a source of salicylic acid, which was first isolated from this plant in 1838, later modified into acetylsalicylic acid and sold as ‘Aspirin.’