I decided to replace the burned tires with a raised bed. The dirt from the towers is now in the raised bed. It is two 2x12s high with a 2x6 flat along the two long sides so I can sit on the sides and lean over the bed. It is four feet across so I should be able to reach to the center. The lumber is treated so maybe it's all right that I didn't paint it. The strawberries are here and I need to get them in the dirt.