When it comes to the irrigation system, you might need professional help to accomplish what is needed with a personal putting green. If you do not know how to do it, do not hesitate to ask an expert. Quality grass needs special care for it is sensitive. Water your grass the same time every evening. The area of the country you live in can also be a big factor in how to maintain the grass and make sure it gives you a true putting surface for practice. More greens info can be found at Backyard Putting Greens – Your Artificial Putting Green Guide.
The grass of real bent grass green is of different type and quality as that of an artificial putting green because the fake grass needs much less maintenance. So it is only natural that both have different mowing cycles, type of mower needed and chemical treatment. It is best that you leave the maintenance to the experts if you have no idea how to do it.