Dandelion

Taraxacum officinale

Dandelion is a perennial that grows best in moist areas in full sun; however, it can survive some shade and dry conditions once established. When dandelion infests turfgrass and ornamental plantings, it forms dense circular mats of leaves that crowd out desirable species and reduce the vigor of those plants that survive. Buds grow from the uppermost area of the root, producing a crown that can regenerate even though the plant is cut off at or below the soil surface. Leaves vary in length from 2 to 14 inches and from 1/2 to 3 inches wide. Margins of the leaves are deeply serrated. Flowering stalks are 6 to 24 inches in length with heads that contain 100 to 300 ray flowers. Seed germination occurs when soil is moist and at least 50°F; however, germination is more rapid when soil temperatures are closer to 77°F. Dandelion plants can survive for many years, developing massive thickened crowns 6 to 10 inches across. These perennial plants are well adapted to irrigated areas such as turfgrass where frequent mowing is practiced.