February 23, 2016 § Leave a comment
One of our maples has funny-looking dark patches on its bark:
Mr. E did some digging. It sounds like an insect infestation called gloomy scale. (Lat. Gloomy Scale, Melanaspis tenebricosa (Comstock), Hemiptera: Diaspididae; haven’t found a Finnish name for them, but possibly something kirvansukuinen.) Gloomy scales can settle onto maples in poorer growing conditions and, among other symptoms, turn the bark black as if it’s been burned.
Looks like we have horticultural oil, mulch and watering in our (yard) future. Ohwell. Learned something new again!