Washing Batiks: In Way Over My Head

First off, I am sorry to have ignored blogging over the past few days. I was traveling for work and just could not get the time to write (or stitch) anything while I was gone.  So, I am happily home and back to the norm.

As you may know, I have been SLOWLY starting an Irish Chain using a pattern from the Moda Bake Shop. I have a very white Kona fabric as the background, which was recently cut into strips.  I thought I would start cutting the batiks and sewing this weekend, but then I listened to Hip To Be A Square on Friday when Flying.  Pam has recently finished a quilt that used batiks and had a small problem with the color running.

I have never used batiks before and I am not a pre-washer (gasp!!), so I thought I had better rinse mine before they bled all over my nice white background.  And so I did...

I also tossed in three Color Catchers because I was a bit nervous.  They turned brilliantly purple!  Thank goodness I did.

So, here is the question for the batik-users out there:  Am I OK with one wash or do I need to wash them again?  How do I ensure they will not run when the final quilt is washed?  Are there tricks to working with these fabrics?  Any hints you may have are absolutely welcome.

As on any other Monday, I am linking up with Canoe Ridge and Sew Happy Geek linky parties.