Contrary to popular belief, dandelion is not an annual, but a very hardy perennial. Its strong taproot penetrates the soil from two to three feet and the above-ground rosette remains the year round. Dandelion, with its yellow blossom, grows over a large area of the United States and it is probably the most easily recognized of all turf weeds. Its long, narrow leaves are variously lobed or serrated. The tips or points of these lobes are usually opposite each other and point back toward the center of the rosette. Yellow blossoms soon mature into round, white puffballs full of seeds. These seeds are carried many miles by the wind and a single plant can serve as a continuous source of infestation.