I burned willow in my woodstove one year, awful smell when green, but actually had a pleasant smell when it was well seasoned the following year. It is not the best wood to burn, unless it's free...that does make it better than bought wood in my book. I looked it up on the arborist website when my buddy brought me over a few truck loads a few years ago and decided that it wasn't the best quality, but certainly nothing wrong with burning it. I would use it on warmer days and when you will be around to reload more often.