Stachys arvensis is a species of flowering plant in the mint family known by the common names field woundwort[1] and staggerweed.

Field woundwort is an annual herb with branched, square stems up to 45 cm long, growing with a sprawling or erect habit.

The stems are pale green and covered with patent, sparsely glandular hairs up to 2 mm long.

They are dull, medium green on the upper surface and paler beneath, hairy on both sides.

The whorls are subtended by a pair of leaf-like bracts which are stalked at the base of the inflorescence, becoming sessile towards the top of the plant.