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
Image as reminder of invisible water irrigation system for garden so that all the lovely plants we spend money on don't die within a few months... Do some research on environmental versions. This one is a Water Butt Irrigation System
Remember when vertical gardens first hit the scene? They were glorious, but they all seemed to require access to a 20-story building, an impossibly high-tech irrigation system, and approximately three million dollars worth of plants. These days there are vertical gardens—and vertical garden tutorials—to suit every space, style, level of skill, greenness of thumb, and plant budget.