Killing grass and weeds without killing Irish Moss?

To kill grass and weeds without harming Irish Moss, consider using a selective herbicide that targets broadleaf plants while leaving moss unharmed. Alternatively, you can apply a mixture of vinegar and salt directly onto the weeds, ensuring you avoid contact with the Irish Moss. Hand-pulling weeds is also effective, though it may require persistence. Always test any method on a small area first to assess its impact on the moss.