KNOTWEED
(Polygonum aviculare)
ID Features:
Leaves
Small, narrow, smooth margins
Whitish, membranous sheaths around stems
Flowers
Small white or pinkish
Borne in junction of leaf and stem
Growth
Habit/Spread:
Annual
Forms a tough, wiry mat
Additional
Notes:
Prefers compacted soils
New seedlings often mistaken for young grass plants