Comparison images
Leaves
Smooth vs. Powell vs. Redroot Pigweed stems and flowers
Flowers
Leaves: Palmer vs. Waterhemp
Images above: Waterhemp leaves (top). Palmer amaranth leaves (bottom).
Stems: Smooth vs. Powell vs. Redroot
Images above: Smooth pigweed stem (left). Powell amaranth stem (center). Redroot pigweed stem (right).
Stems: Smooth vs. Powell vs. Redroot
Images above: Smooth pigweed stem (left). Powell amaranth stem (center). Redroot pigweed stem (right).
Stems: Smooth vs. Powell vs. Redroot
Images above: Smooth pigweed stem (left). Powell amaranth stem (center). Redroot pigweed stem (right).
Stems: Smooth vs. Powell vs. Redroot
Images above: Smooth pigweed stem (left). Powell amaranth stem (center). Redroot pigweed stem (right).
Flowers: Smooth vs. Powell vs. Redroot
Images above: Smooth pigweed flowers (left). Powell amaranth flowers (center). Redroot pigweed flowers (right).
Flowers: Smooth vs. Powell vs. Redroot
Images above: Smooth pigweed flowers (left). Powell amaranth flowers (center). Redroot pigweed flowers (right).
Flowers: Palmer vs. Waterhemp
Images above: Palmer amaranth flowers (top). Waterhemp flowers (bottom).