TORPEDOGRASS, berry vines, goutweed (Aegopodium), dollar weed (Hydrocotyle), solid carpet of cherry laurel sprouts under a mature tree, Nandina, black bindweed (Fallopia convolvulus - I lost that one), purple nightshade vie (Solanum dulcamara), Canada thistle. I'll take a crop of CB sprouts over an established infestation of any of these.