While a hardy plant, moss still requires proper packaging when being shipped to ensure that it will not dry out and survive the rigors of shipping. Here are some tips on how to properly pack and ship moss.
For a small specimen, simply wrap the moss in damp paper towels and place inside a Ziploc bag. Remove as much air from the bag and seal it close. Insert the bagged moss inside a bubble mailer and ship.
Large specimens such as those attached to a rock, a box will provide better protection. Wrap the moss in damp paper towels, and then, in a Ziploc bag. Seal the bag and place in a shipping box. Use packing materials such as shredded paper, crumpled newspaper or bubble wrap to to fill voids in the box and prevent the moss from moving. Close and seal the box with packaging tape. Address and label the package and bring to your local post office or shipping company.