Yes, you can. The soil in the park generally comes from the natural environment, which may contain some plant seeds or nutrients. If you want to grow red beans, you can dig some soil in the park and go home, and then plant them under suitable conditions. Remember to wash the soil with clear water before planting to remove potential harmful substances and impurities. In addition, the planting of red beans should pay attention to temperature, humidity, sunshine and other conditions to ensure adequate water and nutrients to promote their healthy growth.