Green garden waste is delivered to In Vessel Composting sites in Cambridgeshire and London. The in vessel composting process involves different stages. First, the waste is enclosed and begins to decompose. Following that, the decomposing material is moved to a process called open windrow composting. This process involves the material being piled in the open air in rows, where it is occasionally turned, to allow heat and moisture to mix through and decompose it to compost. The compost is then collected for use at local farms and horticultural settings.