Trump has kept on the topic constantly ever since, saying as recently as Monday at a White House event with military spouses: “Grass is like humans. The White House declined to comment. “An amazing dialogue, talking grass for half an hour,” Koch said of the Oval Office discussion. Trump, Koch said, asked good, detailed questions as he was shown carpet sample-like swaths of each grass variety. Koch returned to the White House last week as crews began resodding some areas of the White House lawn outside the helipad construction area.