Perennial Sowthistle (Sonchus arvensis)
Sunflower family
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If found, report immediately! Contact Dana White at (907) 586-6878
EDRR Early Detection Rapid Response
Plant Identification: Perennial with flowers and leaves similar to common dandelion. Plants grow 4 to 5 feet tall. Flower heads are 1 to 2 inches across. Stems are branched only at the top. Basal and stem leaves have prickly margins. Plants exude a milky sap when broken.
Threat: Can drastically reduce crop yields in agricultural areas and displace native plants on beaches and in meadows by competing for light and nutrients.
Found: Rare in Juneau, but found on several local beaches. Can grow in waste areas, gardens, meadows, woods, lawns, roadsides, beaches, ditches, and river and lake shores.