“…In practice, UG are restored or established using different seed mixtures of varying cost and quality, leading to a range of possible outcomes. High-quality species-rich seed mixtures of local ecotypes are very expensive, and in some regions, such as Poland, they are only available in small amounts [ 26 , 27 ]. Alternative methods of seed introduction (e.g., fresh hay application, seeds harvested by brush) are still in the initial stages of assessment for UG restoration [ [27] , [28] , [29] ].…”