Greenhouse guide: 13 incredibly useful tips. If you want the luxury of an in-greenhouse mains supply, some plumbing is needed. A greenhouse roof harvests a surprising volume of rainwater, so store it in butts. Watering techniques range from devotional use of a watering can to a semi-automatic system if you’re away from home a lot.- Telegraph
The best way to water your garden is to set up a drip irrigation system with an automatic timer. But what if you do not have that option?. If so, a great option is to bury a milk jug with holes drilled in it next to your plants. To water all you have to do is stick the hose in the top of the jug and fill up the milk jug and you are done! It also makes it easy to fertilize, add a scoup of fertilizer into the jug and add water and you are done!