by Connie Oswald Stofko Martha and Dan Meegan have many gorgeous container plantings in their yard at 35 Montrose Ave., Buffalo, which they shared this month on the Samuel Capen Garden Walk. But not every gardening project works out the way you plan. “You’re going to fail at some,” Martha said, pointing to a small group of sad pots. “I left those out for people to see.” I loved that demonstration of encouragement to her visitors! I always…