Spiny amaranth (Amaranthus spinosus) is a landscape weed originating in lowland tropical Central America. This species has spread worldwide and has become a serious agricultural weed. It is toxic to livestock. Its sharp thorns deter grazing and make hand weeding difficult. Spiny amaranth has high invasive potential.
- Scientific Name: Amaranthus spinosus
- Common Name: Spiny amaranth
- Seasonality: Year-round
- Soil Type: Wet or dry
- Toxicity: Toxic to livestock
- Growing Season: Annual
- Spiny Amaranth (Spiny Pigweed) Control in Pastures