Recently, PWP hosted a workshop where 25 community volunteers participated in building two hügels in the upper stretch of the Sierra Madre Median, which will be tested by a soil scientist over the next 12 months to gauge the impact on soil health, moisture retention and benefits for adjacent trees. In June 2021, volunteers also built two hügels in the Upper Arroyo Seco. Now, native plants flourish on the hügels and in the surrounding area.