Why are sprinkler system valve boxes usually green or black?
The idea is to match the grass and blend in with the landscape. Green matches the grass, and black blends in well with mulch in flower beds and it works well in grass as well. Of course, every landscape doesn’t look like a golf course. In some areas, like semi-desert areas of Arizona, the landscape design includes xeriscaping that includes gravel patches and drought tolerant bushes and trees. In areas like this, where a green box would stand out, a tan colored valve box lid allows the sprinkler system valve box to blend in better with the landscape.
