I am not sure. That is one of the reasons for this post. Quick web search did not provide me with much info. I thought holly was a hardwood. Will wait for more replies. Thanks.
And evergreens should never be used in cooking. From http://www.barbecuen.com/wood.htm - "CAUTION: Never ever use Pine, Spruce, or other Evergreen wood. They are unacceptable for grilling or smoking due to harmful effects from tar and resins."