Package of 500 Seeds (Overstocked), Pyrethrum Robinson's Mixture (Chrysanthemum coccineum) Non-GMO Seeds By Seed Needs Quality Pyrethrum seeds packaged by Seed Needs. Intended for the current and the following growing season. Packets are 3.25" wide by 4.50" tall and come with a full colored illustration on the front side, as well as detailed sowing instructions on the reverse. Pyrethrum, Robinson's Mix will produce fairly long stemmed plants that grow to a mature height of roughly 24 inches tall. This mixture contains colors of rose, pink & red, accented by bright yellow centers. The blooms are single and semi-double petaled and are greatly used in bouquets and floral arrangements as a cut flower. Grown as a perennial flowering plant, the Pyrethrum will establish from fresh flower seeds. They grow & bloom profusely, later wilting with the first killing frost, only to return the following year from deeply established roots. All Pyrethrum seeds sold by Seed Needs are Non-GMO based seed products and are intended for the current & the following growing season. All seeds are produced from open pollinated plants, stored in a temperature controlled facility and constantly moved out due to popularity.