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).
Palmer amaranth cotyledons and seedling
Waterhemp cotyledons and seedling
Powell amaranth cotyledons and seedling
Redroot pigweed cotyledons and seedling
Smooth pigweed cotyledons and seedling