How to Identify Pigweed
Corn
Pigweed is identifiable by its vertical growth pattern, often reaching heights of 1-2 meters. Its leaves, typically oval or egg-shaped, have a long petiole and a smooth surface with a prominent central vein.
The plant's flowers are small, green, and densely clustered in a spiky arrangement at the top and along the stems. Its seeds are tiny, shiny, and either black or dark brown.
Rapid growth is a telling sign of pigweed. In optimal conditions, this weed can grow 2-3 inches per day, swiftly outcompeting corn for resources.
Another indicator is the presence of numerous seeds. A single pigweed plant can produce up to 100,000 seeds, which can stay viable in the soil for several years.
Wheat
Early identification of pigweed can empower farmers to implement necessary control measures. Here are some distinguishing features to aid in its detection:
Pigweed can tower up to 2 meters in height. Its stem is thick, hairy, and exhibits a reddish hue, while its leaves are arranged alternately, long, oval-shaped, and possess a waxy sheen.
Pigweed blooms small, greenish flowers that cluster into long spikes at the plant's apex. Its seeds are minuscule, shiny, and either black or dark brown.
(Image Credit: Howard F. Schwartz, Colorado State University, Bugwood.org)
