Perennial similar to Broad-leaved Willowherb, but with narrower leaves. It grows in all ways similar to Broad-leaved Willowherb, but prefers damper conditions.
The flowers are 4 to 6 mm in diameter occuring from June to August - small pale pink at the tip of a slender ovary. The four petals have a deep notch and the stigma is a single round compact lobe.
The stem is round and up to 40 cm.
Hoe or hand pull before seed set. Often snaps at soil level, then regrows with 3 or 4 new shoots.
Weedkillers to use:-
Dichlobenil prevents emergence of seedlings among established woody plants, for up to one year.
Paraquat, Diquat kills top growth on contact, use at seedling stage.
Glyphosate, systemic action killing the whole plant.

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