Moss 1

You either have moss or you don't. It's hard to "grow" it, though people try. And other people who have it are often trying to get rid of it and grow lawns instead.

I've attached a photo of one of the great sights of Ainslie Street. It is an indoor-outdoor rug, sitting over a basement hatch on the north side of a house, that has been colonized by a luxurious moss.

Moss requires seasonal moisture and light. It cannot tolerate competition from other plants, foot traffic, disturbance at the roots or being covered with leaves in the winter. But virtually nothing in the way of soil nutrients is required, and it can take summer drought.