Wild Buckwheat Polygonum convolvulus L. An annual with twining or trailing stems to 2.0 m long. Leaves are alternate, smooth and heart- to arrow-head shaped with pointed tips. They have a short, papery sheath at the leaf axils. Flowers are small, drooping, greenish...

Wild Buckwheat Polygonum convolvulus L. An annual with twining or trailing stems to 2.0 m long. Leaves are alternate, smooth and heart- to arrow-head shaped with pointed tips. They have a short, papery sheath at the leaf axils. Flowers are small, drooping, greenish...

Wild Buckwheat Polygonum convolvulus L. An annual with twining or trailing stems to 2.0 m long. Leaves are alternate, smooth and heart- to arrow-head shaped with pointed tips. They have a short, papery sheath at the leaf axils. Flowers are small, drooping, greenish...

Sticky Groundsel Senecio viscosus L. An erect, branched annual with alternate, oblong, deeply-lobed leaves. The entire plant is covered with short, sticky hairs - hence its name. The flower is a compound, vase-shaped head with small, yellow disc and ray florets that...

Sticky Groundsel Senecio viscosus L. An erect, branched annual with alternate, oblong, deeply-lobed leaves. The entire plant is covered with short, sticky hairs - hence its name. The flower is a compound, vase-shaped head with small, yellow disc and ray florets that...

Sticky Groundsel Senecio viscosus L. An erect, branched annual with alternate, oblong, deeply-lobed leaves. The entire plant is covered with short, sticky hairs - hence its name. The flower is a compound, vase-shaped head with small, yellow disc and ray florets that...

Sticky Groundsel Senecio viscosus L. An erect, branched annual with alternate, oblong, deeply-lobed leaves. The entire plant is covered with short, sticky hairs - hence its name. The flower is a compound, vase-shaped head with small, yellow disc and ray florets that...

Pale Smartweed P. lapathifolium L. Pale Smartweed is similar to lady's-thumb but it is larger, it lacks prominent hairs on the leaf sheath and the flowers are green to white-pink . The leaves have a similar dark spot but the undersides of the lower leaves are hairy...

Lady's Thumb Polygonum persicaria L. Lady's-thumb is a slender, semi-erect annual with smooth, usually reddish stems up to 80 cm long. Leaves are smooth, lance-shaped with a dark 'thumb print' on the upper surface. Stem nodes are swollen and leaf axils are surrounded...

Lady's Thumb Polygonum persicaria L. Lady's-thumb is a slender, semi-erect annual with smooth, usually reddish stems up to 80 cm long. Leaves are smooth, lance-shaped with a dark 'thumb print' on the upper surface. Stem nodes are swollen and leaf axils are surrounded...

Lady's Thumb Polygonum persicaria L. Lady's-thumb is a slender, semi-erect annual with smooth, usually reddish stems up to 80 cm long. Leaves are smooth, lance-shaped with a dark 'thumb print' on the upper surface. Stem nodes are swollen and leaf axils are surrounded...

Lady's Thumb Polygonum persicaria L. Lady's-thumb is a slender, semi-erect annual with smooth, usually reddish stems up to 80 cm long. Leaves are smooth, lance-shaped with a dark 'thumb print' on the upper surface. Stem nodes are swollen and leaf axils are surrounded...

Redroot Pigweed Amarathus retrojlexus L. A coarse, erect, branching annual 1.0 to 2.0 m tall with a red taproot and often reddish stem covered with hair. Leaves are alternate, dull green, diamond-shaped and sparsely hairy. Small, inconspicuous flowers are clustered in...

Redroot Pigweed Amarathus retrojlexus L. A coarse, erect, branching annual 1.0 to 2.0 m tall with a red taproot and often reddish stem covered with hair. Leaves are alternate, dull green, diamond-shaped and sparsely hairy. Small, inconspicuous flowers are clustered in...

Redroot Pigweed Amarathus retrojlexus L. A coarse, erect, branching annual 1.0 to 2.0 m tall with a red taproot and often reddish stem covered with hair. Leaves are alternate, dull green, diamond-shaped and sparsely hairy. Small, inconspicuous flowers are clustered in...