I had a big cedar cut down so I'm replacing it with trees and bushes. I also had the stump removed and there is a lot of sawdust. Should I remove all of this? I am a bird lover so my planting is around this. To replace the cedar I have planted one Serbian spruce, two Chamaecy paris obtuse and I have ordered a Himalayan birch and Acer japonicum maple. It is hard to believe that I have taken one tree down to be replaced by five trees. Any suggestions for a dwarf maple to be grown in large porcelain pot?