Diffuse Knapweed (Centaurea Diffusa) is a biennial herb in the Asteraceae family with moderate care difficulty. It requires low watering and full sun or partial shade light in USDA hardiness zones 4-9. This plant is safe for cats and dogs.

Centaurea diffusa is a biennial, annual, or short-lived perennial herbaceous plant known as diffuse knapweed, native to southeastern Europe and invasive in parts of North America.