Rust Mites In Christmas Trees

White pine and Fraser fir Christmas tree growers have occasional problems with the rust mite at higher elevations (>3000 ft). Because damage doesn't occur yearly on high elevation sites, many fir and pine growers do not scout regularly for this pest. They only notice the damage when it is too late to achieve control.

The link address is: http://www.ces.ncsu.edu/nreos/forest/xmas/ctn_034.html