I am having a pool put in the backyard and they are doing the final grade today. A good portion of that area is on a pretty good slope. I'm not ready to put in mulch/landspace and Bermuda sod. So in an effort to minimize erosion till I'm ready I was going to put down Annual Ryegrass and then kill it off when I'm ready to landscape and put down sod. But - the next two weeks are mid 50's for highs and mid 30's at night. So soil temp will float around that 45-degree mark. Will annual rye even germinate?