Biohacking Rain Gardens: Enhancing Sustainable Drainage with Biochar

Rain gardens are a key component of Sustainable Drainage Systems (SuDS), helping to manage stormwater runoff, reduce urban flooding, and improve water quality. However, as cities face increasing climate pressures, engineers and ecologists are exploring innovative ways to improve their performance. One promising approach is “biohacking” rain gardens—enhancing their natural processes through strategic soil amendments. Among these, biochar stands out as a powerful tool to optimize soil health, increase water retention, and boost pollutant filtration.