Up a creaky flight of stairs in a brightly painted orange room, Scott Chaskey, director of the Peconic Land Trust’s Quail Hill Farm in Amagansett, sat down two weeks ago behind his orderly desk for an interview about the farm and its winter share. “I just cleaned a week ago,” Mr. Chaskey joked, explaining his tidy desk, on which he had a jar of pens and a long, elegant feather, and a bowl of small pinecones.