One thing that remained remarkably green during our severe drought is our moss.
We have it in many places in the yard. It occurs naturally and where it does, I do what I can to encourage it for precisely this reason. It’s a wonderful ground cover, a great backdrop for other woodland plants and it’s incredibly drought tolerant.
This is an area where the moss has dried out. You can see how dry our ground is. Ideally we will get some rain this week–or maybe not. The moss won’t care.
Whenever the rains come, if it’s this week or next year, the moss will rehydrate and turn green. That’s the beauty of it.
What’s not to like about a “plant” like that?
Gardendaze 
Moss gets removed from some of the concrete bridges in the neighborhood. I do not mind; but can not understand why such expense is justified while the roads need more important work. There must be a reason for it.
Moss gets removed from roofs here. I have also never understood that. It’s not as if anyone is walking up there. I can understand removing it from patios and decks but why go through the trouble and expense of removing it from roofs? Then again, they sell all sorts of “moss killer ” for lawns, which is also just crazy to me!
Karla