Hi William,
I would definately recommend using photoshop to remove the background from this image. There are many different techniques you can use to do this. You could use the magic wand tool and select the blue area, this is simple and easy but it can be tricky to get clean edges, it depends on the detail you want. You could also try the colour selection tool and select to remove blue or even a try some masking software that you can easily find by googling photoshop masking, but for one image this may be pricey.
If you just need any cut out tree (and not this one in particular) then I run a cutout tree and people website, where you can download a cutout tree for use in your images.
I hope this helps