The decline of industrial manufacturing left large areas of vacant land in the peri-urban belts of many European cities, becoming an economic, social and environmental concern. In the meantime, available fertile soils are being over-used to produce energy crops, and municipal organic wastes are accumulating in landfills, actions that hamper the development of wealth-creating and sustainable societies. Phytomanagement has emerged as a valuable in-situ strategy for the management of peri-urban vacant spaces, able to restore their fundamental ecosystem services. The field experiment described here was undertaken to study the potential of bio-stabilised material (BSM) obtained from commingled municipal solid wastes, both for Brassica napus (rapeseed) crop production and to improve the health/functioning of peri-urban vacant soil as a first step toward urban greening. Three months before sowing, soils were amended with 0, 50 and 100 t FW BSM ha -1 . Data were gathered on the physiology and growth of B. napus at the BBCH-16-17 (57 days) and BBCH-89 (260 days) phenological stages. The activity, biomass, and functional diversity of soil microbial communities were measured concomitantly. Overall, the results showed that the BSM-amended soils became more productive and functional than the unamended soils. At the plant level, the leaf area of B. napus plants was significantly increased at the BBCH-16-17 stage, which later, at BBCH-89 stage, translated to a higher yield. At the soil level, mainly microbial activities related to C and N turnover increased after BSM amendment. This was key in satisfying the oilseed nutritional requirements under our experimental conditions. This innovative study advocates for a circular economy and shows that the combination of BSM amendment and B. napus can be efficacious for the redevelopment of periurban vacant soils. 2013) as well in North America (Newman et al., 2016), the

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