Looking for a striking, cool-season annual plant that will add a pop of color to your garden? Look no further than Ageratum houstonianum 'Blue Mink' Flossflower, also known as Garden Ageratum. These plants typically grow to about 10 inches high and feature ovate to triangular leaves that can reach up to 7 centimeters long. The standout feature of the 'Blue Mink' variety is the dense clusters of vibrant blue flowers, though some specimens may also feature white, pink, or purple blossoms. While native to Central America and parts of Mexico, 'Blue Mink' has become a popular bedding plant in gardens around the world. Just be aware that the plant is toxic to grazing animals and can be invasive if grown outside of its natural range.