RainMachine Touch HD-‐12 Quick-‐Start Guide 13Vegetation Type: Different vegetation and plant types requiredifferent amounts of water. The RainMachine algorithm usesdifferent variables associated with each type of vegetation to makeaccurate water consumption calculations.Sprinkler Head Type: Sprinkler head type determines the flow rateof a zone, or how much water a sprinkler can deliver to your plantsover a given duration. Certain head types have high flow rates, andcan irrigate your yard quickly, while other types are slower.