"when the ditches were creamy with meadowsweet"
Creative Commons Attribution Share AlikeMeadowsweet - Credit: Amanda Slater, Flickr

Meadowsweet (Filpendula ulmaria or Spiraea ulmaria), also known as bridewort, queen of the meadow and meadwort, is a perennial plant with creamy white flowers.

The plant contains salicylates (the compounds used in the manufacture of aspirin) and is a well-known herbal remedy.