Palmer's Amaranth
Pigweed / Carelessweed
Amaranthus palmeri
Photographed in Peoria, Maricopa Co., Arizona. July 17, 2004
This robust weed begins growth with the warm temperatures of mid-Spring and with adequate water can reach over two meters in height. It is abundant on irrigated grounds in the hot cites of Southern Arizona. The airborne pollen can cause hay fever. This plant is also known as carelessweed.