Avacado Tree Material: avacado pit 3 toothpicks glass jar water Method: Space the toothpics evenly apart and stick them halfway into the pit. Suspend pit in glass with flat end down. Fill with water. Keep water level up constantly. In a week or so the pit will split, roots will grow, and finally a stem will appear. Continually pinch off the top leaves as new ones appear. Pot the avacado tree when it reaches 6"