Hard to photo when it has gone to seed. Very large and rangy. Would hate to collect a voucher on this one.
Wonder why I did not notice this plant anywhere until they were at this stage. Even found a six foot specimen in what is supposed to be my vegetable garden last week!
Ca 9 ft tall
Very tall plant, perhaps 5-6 feet, with "thistle-look" leaves.
Seeds resemble that of dandelion.
Lactuca canadensis is a species of wild lettuce known by the common names Canada lettuce, Canada wild lettuce, tall lettuce, and Florida blue lettuce. Its true native range is not clear, but it is considered to be a native of parts of North America. It can be found in other parts, and on other continents, as an introduced species.