what is the fungal that kills all the christmas trees in southern ontario?
a new fungal disease infects and eventually kills the trees. describe the effect this fungus would have on the population of trees on the farm?
It’s called Diplodia tip blight. This site on Scots pines describes its effects on Christmas tree plantations:
http://www.lrconline.com/Extension_Notes_English/pdf/Scots_Pine.pdf
Christmas [...]