Veronica chamaedrys

Germander Speedwell is also a common, hardy turf weed when it invades turf and lawns. It creeps along the ground, spreading by sending down roots at the stem nodes. It is propagated both by seed and stem fragments. Leaves may defoliate in the summer and winter but the stems will grow again next season. Unlike at least five other common speedwell turf weeds such as corn speedwell[3] (Veronica arvensis), the leaves are opposite both on the upper and lower parts of the plant.[4][5] See the Veronica plant for special weed control considerations.