Identifying Weeds: Ground elder (Aegopodium podagraria)
Height x spread: 40-90 x 90cm (16-36 x 36in).
Leaves: Divided into sprays of three, each toothed 5-10cm (2-4in) long.
Flowers: Umbrella-like heads up to 6cm (2-1/2in) of tiny white flowers, early summer.
Other features: Fruits oval, 4mm (3/8 in) vulgaris, ridged. Hard to control. Perennial.