Dothistroma septosporum, primarily a pathogen of Pinus foliage, was found on Cedrus atlantica var. glauca needles in the Cruikshank Botanic Garden in Aberdeen, Scotland. The susceptibility of three Cedrus species, Cedrus atlantica var. glauca, C. deodara and C. libani subsp. libani, was investigated by artificial inoculation. Dothistroma septosporum infection of all three Cedrus species was demonstrated, although disease severity was low, with less than 7% of needles developing acervuli after 10 weeks.