Pigweed can mean any of a number of weedy plants which may be used as pig fodder:

• Amaranthus species
  • Amaranthus albus, white pigweed, tumble pigweed
  • Amaranthus blitoides, prostrate pigweed
  • Amaranthus californicus, California pigweed
  • Amaranthus fimbriatus, fringed pigweed
  • Amaranthus hybridus, smooth pigweed
  • Amaranthus palmeri, the 'pigweed' resistant to glyphosate in the US Southeast
  • Amaranthus retroflexus, redroot pigweed
• Chenopodium album white goosefoot
• Polygonum aviculare
• Portulaca species

• Hogweed

This page is an index of articles on plant species (or higher taxonomic groups) with the same common name (vernacular name).
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