chickweed, violets{a variety of them} things I don't know what they are and my worst is cat briar-maybe smilax? I keep ripping at it's sprouts and every once in awhile I get lucky and the root ball will come out with the stem. What a horrible plant! I can't see what purpose this evil thing has. It doesn't flower or make a berry so what's it's point? Except to annoy the crap out of me-no end! Plus the darn thing can get to be a trip hazard when it sneaks itself through existing perennial beds.