From the book, "Crystal & Stone":
"The man had a memory like an elephant and drew lyrics from experiences. Mickey discussed the story behind 'Poison Red Berries,' aka 'I Don’t Think Much About Her No More' with Country Song Roundup. 'I went to Sammi Smith’s house once to pitch a song, and she had one of those berry bushes in her yard. She told me not to touch the berries; the red ones are poisonous. I forgot about that until years later, when I was searching for a line equating poison with a lost love.' Under an angelic chorus and over a bed of organ-funeral music, Mickey sings the song’s crux: 'Yesterday’s gone and better forgotten / Like a poison red berry it clings to my mind.'