Maryland Family Law Section 5-3A-29
§ 5-3A-29.
CAUTION: READ FULL TEXT OF SECTION FOR SPECIAL NOTE
** SPECIAL NOTE: EFFECTIVE - JANUARY 1, 2006 - CHAPTER 464 - 2005 **
  (a)   Any adult may petition a court for an adoption under this subtitle.
  (b)   A petitioner may petition for adoption of a child 180 days or more after a child placement agency places the child with the petitioner.
  (c)   (1)   If a petitioner under this section is married, the petitioner's spouse shall join in the petition unless the spouse:
      (i)   is separated from the petitioner under a circumstance that gives the petitioner a ground for annulment or divorce; or
      (ii)   is not competent to join in the petition.
    (2)   If the marital status of a petitioner changes before entry of a final order, the petitioner shall amend the petition accordingly.