Dyer's Woodruff (Asperula Tinctoria) is a perennial herb in the Rubiaceae family with moderate care difficulty. It requires moderate watering and full sun or partial shade light in USDA hardiness zones 4-7. This plant is safe for cats and dogs.

Asperula tinctoria, commonly known as dyer's woodruff, is a perennial herbaceous plant belonging to the Rubiaceae family, native to northern and central Europe.