I think my 'Bonfire' is dying, what do you think? After collecting and studying Japanese maples for several years, I am bound to lose one, or so I think? Below are pictures of the trunk of my 4.5' 'Bonfire'. I think it may be its last season, based on the black coloration developing around the stem. The tree is also having a hard time supporting growth at the tips along the top, it keeps failing. I hold in high regard, the level of knowledge and experience of the members on this forum, so I wanted to see what you think. Thanks in advance for your feedback!