A garden in a dream typically reflects the parts of yourself you're deliberately tending -- habits, relationships, or projects you've invested care into and are watching take shape. An overgrown or neglected garden can point to areas of your life that need more attention, while one in full bloom often names growth you can already feel paying off.
Refuse the Moon in Cancer or Scorpio for marriages, unless it be in marrying of widows. - William Lilly (1602.-1681.)