A perennial from a basal rosette with yellow flowers and a 'puff-ball' seedhead. Some Dandelions, such as Taraxacum officinale
, are common and problematic weeds of turfgrass and lawns throughout the United States and elsewhere. Others, such as Taraxacum californicum
, are endangered.
Dandelion can occur as a weed of container ornamentals, landscapes, nurseries, orchards, and occasionally agronomic crops. Some are used for medicinal purposes and as food.