I am facing challenges from annual grasses such as cheat grass and bulbous wheatgrass at my restoration sites. These areas were previously heavily infested with yellow star thistle and have been treated with milestone (aminopyralid). The milestone worked great to get rid of the thistle but the secondary invasion of annual grass has made seed based restoration nearly impossible. 

I am considered an additional herbicide treatment, specifically Rejuvra (indaziflam):

https://www.environmentalscience.bayer.us/vegetation-management/range-and-pasture/products/rejuvra

I would prefer not to use herbicide at all due to potential implications and interactions that are hard to known. Unfortunately the annual grass is the nail in the coffin of seed based restoration at these sites. If you have used rejuvra and wouldn’t mind having a conversation with me on how it went I would really appreciate it. 

Attached are a couple of pictures of the annual grass infestation areas and you can see there is native grass still present in some of the sites that is barely holding on beneath the annual grass.