Its a good idea to bury the wires 6 to 12 inches below the surface to keep them out of harms way.
How to bury landscape wire. -Under a building - In raceway only. Replace any sod that you removed during the process so that the grass can grow back into place. Deep so they wont be damaged if the lawn is aerated.
Doing so would seriously limit its ability to light anything up. The wire can be covered with mulch or soil in a protected. Put the wires in the trench backfill with dirt and replace the sod with a new one.
How Deep Can You Bury Landscape Lighting Wires. How deep should landscape WIRE be buried. When burying landscape lighting wire systems you will need to dig a 6-inch deep trench into the soil or mulch.
Instead use mulch to cover them to a depth of anywhere from about 2 to 5 inches. Bury it in the conduit and if you have any put warning tape down the conduit and cover slightly in sand so if you forget about it and start digging if you hit sand or the warning tape you know not to dig further. Insert the wire into the trench and secure it with ground staples.
I operate in a rather rugged environment here with lots of roots and rocks so trenching wire in is a real pain. I do however bury the associated wire and connectors. To do this you can use a thin and sharp spade which will allow you to create an angled trench more quickly and seal it more tightly.
Additionally can you use low voltage wire for outdoor. Only the fixtures themselves should remain visible. A good rule of thumb is to dig about 6 inches deep into the mulch or soft soil and grassy areas.

