I do a lot of characters, and not enough scenery/buildings/machines.
When sketching a scene I usually start with a thumbnail: a small doodle to get the general idea of the layout. In this case I took the thumbnail and expanded it to be much larger. What is shown here is only 20% of the full-sized picture. The thumbnail started even smaller than this. Once I scaled it up I added a few details.
This took just under an hour. That included googling various trees, plants and fungi. I may choose to come back to this picture another day.