If you're trying to save money and eat healthy with a garden, you probably don't want to spend a lot of money on watering. Luckily, with a few essentials, you can set up a system that waters your garden automatically for free. You just need a clean roof, a barrel, some hoses, and layflat couplers, a sprinkler, and a timer. Here's an overview of the process.
For this process, you're going to harvest free rainwater off of your roof.