I've seen on a lot of people's houses that face the north something that is a brighter green always towards the bottom of the siding...is that moss?? I don't have it on my house, but I have noticed it on the outside of my flower bed that is on the north side of the house! There is an area that I had cleared off when doing the bed, so where the border is and where the grass starts again, there was just dirt, and that stuff is growing there. Also, I noticed the bottoms of the cedar pillars on the north side of the house are starting to get green!

What is it exactly, and is there a "trick" to getting rid of and/or preventing it??

Thank you!

I have moss growing on the North side of my yard. It's pretty moist there & the moss loves it. I don't get rid of it. It's green & it looks nice.

Moss doesn't harm anything, so I wouldn't try to prevent it on trees. You could try digging it up in the lawn.

It probably is moss. My neighbor has it on the front of his house. He tried everything last year, even painting the bricks--nothing worked. Guess you just have to live with it.