Wireweed

Polygonum aviculare
Wireweed (Polygonum aviculare) is a widespread annual with wiry, trailing stems that form mats up to 1 m in width. Wireweed (or wire weed) prefers to germinate in wet soils so it is problematic in winter and in spring sown crops as it can be very competitive and smother crops. Once larger than a seedling, is difficult to control, with selective herbicides in crops.
Wireweed

Cotyledons:

  • Long
  • Apex rounded
  • Base not tapered
  • Stalkless

Leaves:

  • Thin spear-shaped
  • Rigid

Related Pests