How do you hang something on a stucco wall?

Not sure what is under the stucco, but it's as hard as rock. Id'd like to put up shutters or something to break up a big blank wall.
Also, I'd like to put up a handmade tile strip. Ceramicist artist friends have said they use silicone of some sort. Can anyone provide details, please?
I live close to the ocean, so salt air and harsh sun are a consideration.
Thank you in advance,
  4 answers
Your comment...