Where do you draw the line between a good weedy plot and one that needs spraying. Other than the poa annua I don’t see much issue with the plants Matt mentioned. But what if it’s Italian Ryegrass or Wild Mustard (turnips) ? I gotta treat them in those situations. I let some Canadian Thistle go last year in a plot but just spot sprayed some last week. I had also sprayed about half of the plot due to the amount of ryegrass the last couple of years.