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
Irrigation spikes - attach these spikes to old soft drink bottles to create an efficient irrigation system for your garden! The slow-drip design delivers water deep into the soil, so your plants stay nourished while you save time watering.