Want to conserve water but still want to make sure you aren't under-watering your garden? Want to establish a simple greenhouse irrigation system? Clay pot irrigation can save 50-70% of water without depriving your plants.
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
How Green Walls Work Illustration by Jason Treat, National Geographic. Many living wall systems also have built-in irrigation systems in which water is harvested at the bottom of the wall and recirculated back to the top.The types of plants on green walls differ, but can include grasses, vines, and other climbing plants—all of which must have strong root structures, Green Roofs for Healthy Cities'.