There are a number of barriers, which vary across time and space, to native seedling survival. If soil freezes for even a 24-48 hr period, up to 90% of the germinated seeds can die. Alternatively, a couple of warm days in December can cause seeds to germinate. Precision restoration is key to perennial grass reseeding.
Data from rangeland studies in both Oregon and New Mexico supports grazing as a strategy to promote ecological resiliency. Grazing can be used to manage and promote perennial grasses. In a study focusing on The Great Basin area, researchers found that the fuel moisture of un-grazed rangeland was 21% whereas the same fuel moisture of properly grazed rangeland was over double that at 46%.