If you can't find the gloomy scale this might just be a harmless fungal issue. Around here lots of Sugars turn black, but I always just chalked it up from some sort of minor mechanical damage, fermentation, and adventitious fungus.
What are common treatments for gloomy scale? An initial google...
Just to pile onto the "don't do it crowd" I will give a short account of my experience with HA.
They called trying to solicit their services. We weren't interested, as we are more interested in growing organically and using other online marketing tactics. The salesman persisted, at which point...
The brief contracts we have for proposals clearly outlines that additional work will affect the price. For many of my customers this is enough and they know if they ask for additional work they trust I will be honest with the final bill. With others they need me to come out and re-estimate the...
I'll sometimes talk to the clearance crews when they are working near one of my crews. We only get the big companies for those contracts, so safety is usually on point. A newer (but large) company I'd never seen before was actually over the top with their safety protocol. They had cones set up...
Honestly this would work for me. I expect you'd have a hard time getting speakers to log-in at this time, but for the practicing/operating arborist this would probably be the best time.