My husband mounted these to the outside garage wall in our backyard, he used anchor bolts drilled through the tires and into studs. I then added organic soil and a spray of favorite plants. The issue I have found is that it needs watered frequently in the spring and summer months, so easy idea is to take a 2 liter bottle and drill a hole in the lid and then fill with water, bury the top of the bottle in the soil and it will water slowly, just keep checking the bottle water level. If Plastic isn’t your thing, then drilling a hole in a cork and re-cork a water filled wine bottle and it’s a classier water dispenser.