@box said:
And keep in mind that you should make some 'cuts' through the tree. In other words create gaps in the outer edge of the tree, break it into several 'trees' so that you don't have one continuous border edge that ends up with a huge number of segments. When I first looked at it the whole thing contained over 330,000 segments. It would be highly likely that the border edge would contain more than 10,000 and 10,000 is a finite limit. Sketchup will shutdown without a bugsplat if you attempt to manipulate a continuous edge of over 10,000.
This was only an experiment. I found some images from "clean png" site and conerted it to a DXF using https://convertio.co/png-dxf/, I thought that particular png was extremely complex but now I will look for a less complex subject for my experiment.
I think this method of converting a raster image into a DXF and then importing into SU has some promise though.