“Petri dish growth medium” crossword clue

Reveal the answer to see why it works and where this clue has appeared before.AGAR is the answer to the New York Times crossword clue “Petri dish growth medium”. It was last seen in the puzzle of October 8, 2025, where it runs at 1 Across and fills 4 squares. It crosses 4 other entries in that grid — those are listed below and are the quickest way to confirm the letters you already have.