Sowing from seed needs to be done with good quality compost in a propagator or warm place in the spring time. Sow the seeds on the surface, keep moist but not wet, and they should germinate within two weeks. Plant out only after all risk of frost has passed. Established plants can also be divided in the spring. As with most summer plants, Sneezewort will thrive in the full sun or partial shade, and in moist but well drained soil. It is hardy and drought-tolerant.
Sneezewort will grow to about half a meter wide by half a meter tall. Untidy foliage can be cut back in the springtime, or dividing in the spring will promote the health of this plant. It not only looks good as a cut flower, but cutting it will also encourage flowering to continue as far as October. Be sure not to grow Sneezewort in an area where cattle, sheep or horses might roam, as it is poisonous to them.