'''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

==See also== *Hogweed

{{Plant common name}}