If you have a shady lawn, you know how hard it can be to grow grass under those conditions. So why not plant something that occurs naturally in shade, like moss? Moss is a hardy green groundcover that grows in places where grass won't, like acidic and compacted soils. It can also anchor itself on objects like trees and rocks and thrives in cool, moist climates like that of the Pacific Northwest in the United States.
Moss has long been used as a groundcover in Japanese gardens, and there's no reason why it couldn't catch on elsewhere. Its thick carpet is impervious to weeds, and some moss lovers even claim that its verdant green color can actually promote relaxation and reduce stress. However, it requires a little more maintenance than some of the other grass alternatives described in this article. In warm, dry weather, moss will turn brown unless it's watered, though it still won't require as much as turf grass. Moss patches don't have to be mowed, but fallen leaves and twigs can discourage growth and must be cleared. This can be done with a gentle raking, though some gardeners prefer more energy intensive methods like leaf blowers or shop vacuums.