What does the cryptic crossword clue "Forest dwellers seeing prophet come back to Earth? (5,5)" mean?

The wordplay uses a reversal. PLANET (synonym="PLANET") + SEER (reversal="SEER") = PLANETREES The answer is PLANETREES.

Forest dwellers seeing prophet come back to Earth? (5,5)

Guardian Cryptic #29233 | 11 Across | 2023-11-21 flower