Dandelion is a winter perennial. The dandelion has thick fleshy tap root which often branches. New plants come from the root and root segments. Leaves form in a rosette, are deeply lobed, with the lobes pointing toward the base. Both the leaves and flower stems contain a white milky fluid.
Dandelions can be physically removed, but it is very important to remove the taproot, in its entirety if possible, as new plants can sprout from root sections. Do not try to remove dandelions by hand; use the appropriate digging tool which is designed to penetrate deep with minimum damage to surrounding turfgrass plants.
Source: Virginia Polytechnic Institute & State University