• Determine if postfire seeding of introduced versus native seed mixes differ in their abilities to reduce the growth and reproduction of cheatgrass.

• Determine if the inclusion of leguminous species in seed mixes increases soil available nitrogen and the subsequent growth and reproduction of cheatgrass.

• Evaluate the effects of soil nutrients on the ability of seeding treatments to reduce postfire growth and reproduction of cheatgrass.

• Evaluate the effects of postfire density and diversity of native species in the soil seedbank on the growth and reproduction of cheatgrass.

• Determine if seeding treatments affect the seedling biomass, seedbank density, and species diversity of native plants.

• Develop recommendations regarding the use of postfire seeding to reduce growth and reproduction of cheatgrass in recently burned sagebrush steppe.