what is tansey a weed or flower
Tansy (Tanacetum vulgare) is a perennial, herbaceous flowering plant of the aster family, native to temperate Europe and Asia.It has been introduced to other parts of the world and in some areas has become invasive. It is also known as common tansy, bitter buttons, cow bitter, or golden buttons.ome traditional dyers use tansy to produce a golden-yellow color. The yellow flowers are dried for use in floral arrangements. Tansy is also used as a companion plant, especially with cucurbits like cucumbers and squash, or with roses or various berries.