domestic heat from compost ..... a question

Hi All,

I've read/watched some of the information about gathering heat from composting. The video showed 'double shredding' the organic material before building the pile.

My question deals with the fact that I have a lot of greenbrier growing on my ground. How thoroughly would the thorns be degraded during composting? I'd not be real happy grabbing a handful of greenbrier thorns while spreading the finished compost.

Don

Don't know about greenbrier, but I have composted a bunch of blackberry (along with lots of grass) and there was no thorn nor anything resembling a plant after a couple years composting (we did not need the stuff earlier than that). For what it's worth, in my neck of the woods (northern Spain) the local blackberry is definitely much thornier than the local greenbrier.