Pigweed can mean any of a number of weedy plants which may be used as pig fodder:
- Amaranthus species
- Amaranthus palmeri, the 'pigweed' resistant to glyphosate in the US Southeast
- Chenopodium album (white goosefoot)
- Portulaca species
Pigweed can mean any of a number of weedy plants which may be used as pig fodder: