Using whole-wheat pastry flour

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Is it possible to use whole-wheat pastry flour for my sourdough starter? If it is possible, does it make it more difficult?

Thanks.

Sure, it is possible.  I don't see why it'd make keeping a starter alive much more difficult as their should be plenty of nutrients in there to sustain it, but you're going to need something with more protein when it comes to turning it into a loaf.

Good luck!