Black seed has long been prized in many traditions as a small thing with great value, and in dreams it is read as hidden worth and the care of old inherited wisdom.
When this appeared in your dream, what were you feeling?
My Cosmic Code has a private dream journal. Write a dream down and the app picks out the symbols in it, shows what dream books say about them and, over time, which words recur across your entries. The journal is stored on your device only.