There is little quantitative data regarding the effects of herbivores, disease, competition, hybridization or allelopathy on population viability. No native plant species appear to substantially compete with Allium aaseae for moisture, and only red three-awn seems to compete for space (Prentice 1988). Two exotic winter annuals, cheatgrass and storksbill, apparently are important interspecific competitors. Vigor of Allium aaseae populations can be reduced where these weeds are prolific (Prentice 1988). Livestock grazing on Allium aaseae is minimal, although indirect effects, such as habitat degradation and trampling are more serious. Deer have been observed feeding on Allium aaseae in early spring and chukars are known to eat bulbs later in the spring. The most serious insect pest seems to be an unknown seed predator that bores into and devours inner portions of the seed (Prentice 1988). A rust is common on populations in the Woods Gulch area, and maybe other places as well. The deep-seated bulb of Allium aaseae would survive wildfires. Hybridization and introgression are likely occurring between Allium aaseae and the more widespread A. simillimum (Smith 1995).
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