Hearts and Flowers Progress

I have been steadily working on my Hearts and Flowers quilt and am just about to reach the finish.  I have enjoyed this quilt and have not been able to work on any others since I started it.
My next decision is weather to use the fabric shown in the book for the last border or to choose a darker one.

My next project is going to be Lollypop Trees and  I have a question for all the wonderful quilters on this blog.
Do you or don't you prewash your fabric?
I didn't on my Hearts quilt and I think maybe I should have.
There was no problem with the blocks you cut large and trim down but the ones that were cut to size  like the ones in border two seemed to shrink a little.  I had to do some creative pressing to get them to fit.