There are no credits on a federal return
for installing artificial grass.
However, If you make improvements
which increase your home’s market value
and/or extend its useful life, you can add to the cost basis of your home,
which may reduce the capital gain when you sell your property.
See
Home Improvements And Your Taxes
See
Artificial Grass & Synthetic Turf
US
Rebate Programs
http://www.asgi.us/artificial_grass_rebates.htm