Wild plant identification

Asked July 13, 2018, 9:14 AM EDT

Hi I have a new wild plant growing in the field at my house. I killed the creeping thistle last summer and this has filled in can you tell me what it is?

Washington County Minnesota

5 Responses

The photos lack the detail needed to be sure, but the plants with yellow flowers (photos left and middle) are probably a kind of mustard. The plants on the photo (right) are goldenrod.

The additional photos appear to be the same as the ones posted originally.

In any case, the plants with yellow flowers appear to be a kind of mustard, probably charlock (Sinapis arvensis). Compare here:

The plants in the third photo without flowers are probably Canada goldenrod.

Neither species is officially considered "invasive" but both are aggressive weeds that colonize fallow fields or other disturbed areas.