Rhabdocline Needlecast Increases Needle Loss of Douglas-fir Christmas Trees

Fig. 1. Rhabdocline needlecast infection results in the casting of older needles in late spring and summer, leaving severely infected Douglas-fir trees with only one year’s complement of needles.



Image from Plant Health Progress article:
Rhabdocline Needlecast Increases Needle Loss of Douglas-fir Christmas Trees