Ageratum houstonianum. Also known as the Floss Flower, Cutting Ageratum is much loved in summer cutting gardens because of the brilliant lavender-blue, rose and purple colors and the fuzzy texture that it brings to bouquets. It should be started indoors 6 to 8 weeks before transplanting out later in full to partial sunlight. Bee friendly. Deer resistant. Annual. Summer flowering. Height: 24".
Average seed life: 4 years.