Post-use wood waste from municipal landfill was separated from other materials (metal, glass, plastic) and crumbled, and then it was composted in the form of open piles (similar to 4 m(3)). Quality assessment of composts obtained after a year and two years of composting was done based on their chemical composition (content of macronutrients and micronutrients) and results of vegetative pot tests. Willow Salix purpurea L. was cultivated on substrata composed of pure soil and composts in the following doses 50%, 25% and 10%, and also on substrata containing 100% of soil and 100% of compost. 25% dose of compost (75% soil, 25% compost) proved to be the most conducive to the growth of willow plants in height. The yield of willow from substrata containing two-year-old composts was higher than in the case of willow cultivated on substrata containing one-year-old composts.