• FIRE ECOLOGY OR ADAPTATIONS
• POSTFIRE REGENERATION STRATEGY

FIRE ECOLOGY OR ADAPTATIONS:

The life cycle of western yarrow in grasslands is completed by the onset of the summer drought and fire season in July [6]. Following fire, regeneration is from rapid rhizome spread [72] and wind dispersal of seeds onto burned sites from adjacent unburned areas [41].

Western yarrow occurs in plant communities with a variety of fire regimes. The range of fire intervals reported for some species that dominate communities where western yarrow occurs are listed below. To learn more about the fire regimes in these communities, refer to the FEIS summary for that species, under "FIRE ECOLOGY OR ADAPTATIONS."

Community dominant        Range of fire interval (yr)
                                            
interior ponderosa pine   20-42
   (Pinus ponderosa var. scopulorum)
Rocky Mt. Douglas-fir     10-30
   (Pseudotsuga menziesii var. glauca)
quaking aspen             7-10
   (Populus tremuloides)             
rough fescue              5-10
   (Festuca altaica)       
 

POSTFIRE REGENERATION STRATEGY:

Rhizomatous herb, rhizome in soil
Initial-offsite colonizer (off-site, initial community)

Related categories for SPECIES: Achillea millefolium | Western Yarrow