Single Packet of 500 Seeds
Grow Pyrethrum from fresh Tanacetum coccineum flower seeds. 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. Pyrethrum is fairly easy to care for and does best in zones 3 to 7.
Sowing The Seed
Pyrethrum seeds can be started indoors in peat pots, 6 to 8 weeks prior to the last frost. Sow at a shallow depth of roughly 1/16" under topsoil so that the seeds will receive direct light to germinate properly. Sow directly outdoors or transplant when the weather is warm and all danger of frost has passed.
Pyrethrum will enjoy an area of full sunlight for the majority of the day. They will thrive in temperatures of about 68F or above. A rich soil is recommended, however make sure that it is well draining as well. To improve drainage, mix a light compost with any hard, compacted soil. Water daily so that the soil is moist until germination has occurred.
Germination & Growth
Your seeds will begin to germinate in as little as 7 to 14 days after sowing. The plants reach a mature height of 24 inches tall and can be spaced about 12 to 18 inches apart. Robinson's mixture produces beautiful pink, red and rose colored blooms. Pyrethrum makes a great cut flower due to their long stems.