要救樹還是重新種樹?Chicago has only 50,000 ash trees left. Should we spend millions to keep them alive?By Mariah WoelfelAn ash tree on a North Center street. Some activists say the city should spend millions to restart a program that would inoculate the trees from invasive emerald ash borer. Angela Rozas O’Toole / WBEZChicago has tried for more than a decade

Removing dead, dying, and diseased branches, and palm leaves移除死亡、乾枯、生病枝條，與棕櫚葉子tree branches routinely die and typically generate protection wood in the branch some distnce beyond the branch protection zone formed in the collar. Dead branches eventually fall off trees because they break in this protection wood, leaving a dead stub (figure 5-15, left), removing dead stubs and dead branches is

棕櫚樹 異常中的正常NORMAL "ABNORMALITIES" IN PALMS1Timothy K. Broschat and Monica L. Elliott 2Consultants and extension agents are frequently approached by palm owners with concerns about the abnormal appearance of their palms. Most of these abnormalities turn out to be symptoms of a disease, insect, nutritional, or other physiological disorder. However, some of these "abnormalities" turn out to be perfectly

2010 - 2019 樹木工作意外事故，來源 TCI 雜誌資料來源:http://tcia.org/@/TCIA/PUBLICATIONS/TCI_Magazine/TCIA/Publications/TCI_Magazine/TCI_Magazine.aspx?hkey=4ab5fcfe-7f4c-4d60-b76e-66b1df925b65Accident Briefs compiled for accidents occurring 2010 - 2019Published in TCI Magazine (In descending order)All items taken from published reports or reported directly to TCIA staff, as noted.Accident Briefs compiled for accidents occurring January through December 2019January 2019 Accident Briefs compiled for the March 2019 issue of Tree Care Industry MagazineHomeowner dies in fall