Wildlife Spotting

I have a bunch of these growing in my garden. They are about 6 - 8 inches high. Leaves are over 1-1.5" long in the bigger ones. Leaves have a jagged border. Stalks are green, thickish, & not hard like a young tree stalk. No flowers, blooms, or buds yet. It's almost as if a plant I had last year went to seed, but they don't seem to look like any of the ones I recall having planted last year. I did put in new topsoil last year, but the plants are only concentrated in one area, not all over where the topsoil went. Any ideas as to what these are?