This is a book that I read when I was a preteen, so early 90’s. I am starting to think I made it up! I remember there was a girl who lived in a cabin and is an orphan (I think) and she finds these seeds that glow so she plants them. Then they grow into a garden that shines at night and works to call her family to her because it turns out she is not from earth and her family was looking for her.