Wool-geopolymer composite pots were produced as an alternative to commonly used peat ones. Already grown plants and seeds were studied over a period of 6 weeks. First results outlined that wool-geopolymer pots promote the earlier growth of seeds comparing to the reference ones. The alkaline environment of the geopolymer is indeed able to partially degrade the keratin structure of the wool (but preserving the fibers' nature), making most nutrients readily available for the sprouts. Moreover, the intrinsic porosity of the composite and the hygroscopic properties of the wool allow to maintain a significantly higher moisture content in the potting soil, thus significantly reducing the weekly amount of water needed. TRL 4-5