Seeds germinate in spring. Seed longevity in the field is poorly documented. Under certain conditions, fragmented stems regenerate into new plants. Stem pieces develop roots rapidly and can disperse great distances along watercourses to initiate new colonies. Populations derived from a single clone do not set seed.
Seed production is typically lower in terrestrial plants.
Reproduces by seed . Seed viability is variable. Under drought conditions seed production is often low, and many seeds may be non-viable. Seeds typically germinate March through June. Most seed germinates within the first year.