These Hydro-herb kits are as environmentally sound as possible. All of the parts in each kit are either recycled and recyclable or entirely biodegradable. The wine bottles that form the largest part of our kit are obviously reused rather than recycled locally minimising any carbon production from melting the glass down or transport. The capillary matting is recycled and the plastic bottles in the kit are also made from recycled plastic that may itself be recycled. The Jiffy Pellets that are made of coir (ground coconut husk) rather than peat, so they are not contributing to the reduction of peat bogs. The cork lid/place mat comes from renewable sources in Europe as do the natural rubber band. The terracotta pebbles used in the kit along with the cork and natural rubber band are all biodegradable.