“…In 2021 alone, urban flooding reached unprecedented catastrophic levels in Europe, causing deaths and widespread damage (Bosseler et al, 2021;Fekete and Sandholz, 2021). In Finland, occasional intensive precipitation, particularly in July and August, affects residents and the economy (Aalto et al, 2016;Votsis, 2017;Assmuth et al, 2020). Urban green infrastructure is a sustainable, effective, and economic bioretention method to manage stormwater (Jayasooriya and Ng, 2014).…”