How long can moss survive without water?

Some mosses are able to take up nutrients from water flowing over them, thus they have very effective absorptive surfaces. Other mosses, such as Polytrichum, sequester nutrients directly from the soil or substrate on which they are growing and transfer the nutrients to their growing tips. read more

Sam, Irish moss is not a real moss but a normal plant that looks similar to some species of moss. It does not have the same characteristics as a true moss which can grow on stone without soil. The only way to grow Sagina Subulata (Irish Moss) is in a soil medium. Maybe you can create pockets with your stone work and fill the crevices with soil. read more

Getting rid of moss is nearly impossible unless the cultural conditions are corrected to be less inviting. Unless this is done, moss will start to grow again. If the cultural conditions cannot be corrected, the Cornell Cooperative Extension recommends letting the plant grow as a permanent ground cover. read more