Filipendula ulmaria
"Arrhenatherum elatius" is a principal species in two UK National Vegetation Classification habitat communities: the very widespread MG1 ("Arrhenatherum elatius" grassland) and the much rarer MG2 ("Arrhenatherum elatius" - "Filipendula ulmaria" tall-herb grassland). This means that it can be found with species such as "Dactylis glomerata" (also known as cock's-foot and orchard grass), and "Filipendula ulmaria" (also known as meadow-sweet).