Irrigation for outdoor plants has been available for aeons yet to water our indoor plants we've used a jug from the kitchen, a watering can or even set up these new water bulbs.

But, there is another alternative. In this great step by step tutorial you can install your own automatic irrigation system that keeps your plants moist even when you're not around. And it only cost US$45 (A$60) to make it.

The downside of the operation is that it relies on a reservoir rather than a constant source of water but for the cost and peace of mind it seems a small price to pay.