The hexagon cells that make up each COREgravel panel form a rigid honeycomb design that holds gravel in place and supports load distribution. The underside is a geotextile allowing water to drain easily and prevents weed growth. Interlocking system edges support assembly.
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