
Cultivating Southern firs
During the holiday season in the U.S., more than 20 million freshly cut Christmas trees are sold every year, with fir trees topping the most-desired list. Unfortunately growers cannot meet the needs of consumers, and every year, there is a shortage of trees, primarily due to the incredible losses of susceptible firs — including balsam, Fraser, Canaan and others — to the root fungus Phytophthora.