On today's 2 minute garden tip, I show you how to make a free drip irrigation system with an old 5 gallon bucket. 5 gallon buckets are an important tool in most gardens, but they eventually wear out. Don't throw them away! Reuse them as a DIY drip irrigation system for your trees and landscaping. You can also fertigate with this method. Simply mix fertilizer into the water and let them drip irrigate plants and feed them in the process!