Reverse of each packet includes the heading "This packet contains Black-eyed Susan seeds. These flowers are biennials - they'll sprout and grow in the first year, bloom only the second year. For annuals, perennials or to learn more about wildflowers, as well as flower bulbs, perennial plants and more, visit us at AmericanMeadows.com." Standard size is 3 1/4" wide x 4 1/2" tall.