Step Three: Install Hardscape Areas
It is best to install most hardscape areas before the irrigation system and plants.
As a last check prior to installation, measure and mark off hardscape areas. Temporary marking paint and marker flags are two tools that can be used to mark landscape components. Both can be purchased from local landscape and irrigation suppliers.
If irrigation lines run beneath fences, walls and other hardscape areas, it is a good idea to install a sleeve under those spots. Make sure you mark and install sleeves for irrigation lines and outdoor lighting at this point.
If possible, purchase the entire quantity of each type of hardscape material at the same time. This will help to ensure color consistency, as colors may vary somewhat, and this will also save time during the installation process.
NOTE: Although mulches are considered a hardscape element, they are usually installed after the plants.