In desert cultures the date palm marks water and life, so it is read as sustenance in hard places. Tradition also ties it to blessing, patience and long-awaited reward.
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.