Dandelion is a broadleaf perennial recognized by bright-yellow flowers and a large, flat rosette of leaves rising from a long, fleshy taproot. Dandelions favor thin turf. Pull or dig out young plants before they go to seed. Then cut any regrowth from leftover root pieces. You can also spot-treat weeds with a selective broadleaf weed killer.
White clover is a broadleaf perennial that used to be included in grass seed mixes.
The plant spreads by creeping stems and thrives in sparse, undernourished turf with excessive moisture. Control it by watering well, applying nitrogen fertilizer and avoiding excessive applications of phosphorus. Ground ivy is a broadleaf perennial with square stems and bright-green rounded leaves with scalloped edges. It reproduces by seed and creeping stems that root as they touch the ground. Also called creeping Charlie, it prefers damp soil and shade.