Common Ragweed – Mature Plant

Common Ragweed – Mature Plant

Common Ragweed Ambrosia artemisitfolia L. An erect, much branched annual up to 1.0 m or more tall. Leaves are deeply divided. Seedling and lower leaves are opposite, upper leaves are alternate along the stem. Green, staminate (male) flowers are found in elongated...
Common Ragweed – Seedling

Common Ragweed – Seedling

Common Ragweed Ambrosia artemisitfolia L. An erect, much branched annual up to 1.0 m or more tall. Leaves are deeply divided. Seedling and lower leaves are opposite, upper leaves are alternate along the stem. Green, staminate (male) flowers are found in elongated...
Annual Sow-Thistle – Milky Sap

Annual Sow-Thistle – Milky Sap

Annual Sow-Thistle Sonchus oleraceus L. Annual plant up to 1.0 m tall reproducing only from seed and with a deep taproot. Leaves are deeply lobed, without hairs, and shiny. Lower leaves have long petioles; upper ones are without petioles and the lower lobe clasps the...