I would try a different type of seed.

I don't know much about seed types but I went to a turf farm seed supplier and told them the conditions of my lawn and they handed me a bag of seed. Now my lawn looks the best in the neighborhood!

See if there are any around you, or any universities around might have a suggestion. Ours has a whole agriculture section on their site for what to do in this area.

For the hill, you might also consider a special biodegradable landscape fabric that I saw at Walmart the other day. It's suppose to prevent the seeds from being washed away down the hill. Never tried the fabric, so don't know how well it works. Maybe you or someone else could tell us. Another option is to sod the hill, staking each piece of sod at two points. Good luck with that hill! Let us know how it turns out.

This post was edited by ZoysiaSod on Sat, Apr 26, 14 at 10:07