Hemp-agrimony
Eupatorium cannabinum
Family: Asteraceae
Fire effect on plant
We found no published information about the direct effects of fire on hemp-agrimony but it is likely top-killed with underground rhizomes surviving.
Key traits
Hemp-agrimony is a tall herb with woody rhizomes from which erect stems rise (Klimešová et al 2017). It overwinters as belowground rhizomes.
Hemp-agrimony produces thousands of tiny, wind-dispersed seeds (Clarkson et al 2003). Seed longevity is variable, from transient to long-lived (Thompson et al 1997).
Plant response to fire
The response of hemp-agrimony is not described in the literature. Survival of rhizomes seems likely, as does the movement of seeds into burned sites on the wind and their subsequent germination.
Timing of life history
A perennial. Seeds likely produced from second growing season. Flowering July to September.
Conservation status
None.
References
Clarkson, B.D., Mc Queen, J.C., Walbert, K. 2003, Eupatorium cannabinum Invasion of Ihupuku Swamp, Waverly. CBER Contract Report No. 28. Department of Conservation, Wanganui. [Empirical evidence; Grey literature]
Klimešová, J., Danihelka, J., Chrtek, J., de Bello, F., Herben, T. (2017) CLO-PLA: a database of clonal and budbank traits of the Central European flora. Ecology 98: 1179. [Empirical evidence; Academic literature]
Thompson, K, Bakker, J P, Bekker, R M. 1997. Soil seed banks of NW Europe: methodology, density and longevity. Cambridge University Press. 276 pp [Empirical evidence; Academic literature]