Swisstone Pine disease

DA Quality Lawn & YS

LawnSite Fanatic
Location
Rochester, MN
Anyone know what might be hitting this Swisstone pine? I dont see mites, etc. Tree is roughly 40 years old.

IMG_20200620_135148157.jpg


IMG_20200620_135210740.jpg
 
OP
DA Quality Lawn & YS

DA Quality Lawn & YS

LawnSite Fanatic
Location
Rochester, MN
I did look at the trunk closely. I could not find anything resembling cankers, or matching those on a few forestry websites I looked at. I did see a fair number of circular holes on the trunk. I tried to peel away the bark to check for tunneling, but its almost impossible with that chunky, flaky bark. Maybe the holes just woodpeckers?
 

Trees Too

LawnSite Fanatic
Location
USDA Zone 6a
I did look at the trunk closely. I could not find anything resembling cankers, or matching those on a few forestry websites I looked at. I did see a fair number of circular holes on the trunk. I tried to peel away the bark to check for tunneling, but its almost impossible with that chunky, flaky bark. Maybe the holes just woodpeckers?
Or sapsuckers...

@hort101 @Wye Oak Tree Any thoughts/insight on this pic?
 

hort101

LawnSite Fanatic
Location
S.E. New England
Or sapsuckers...

@hort101 @Wye Oak Tree Any thoughts/insight on this pic?
Id look for sooty mold as possible indication of micro insects mites cant always be seen with naked eye a paper test helps with some

Are the needles speckled

Is all growth affected or just certain limbs?

Look for pitch maybe gum or the cankers like you said

Whats the weather been like?

might help towards fungus or drought stress
 

BrandonV

LawnSite Fanatic
Location
Central NC
I’m it super familiar with these pines but how the weather been? A bunch of ours are dieing due to the crazy wet weather we’ve been having... especially white pines.
 
OP
DA Quality Lawn & YS

DA Quality Lawn & YS

LawnSite Fanatic
Location
Rochester, MN
That tree is at my folks home in northern Iowa. I'd say the last few years have trended toward the wet side. But as old as that tree is, I'd say its hard pressed to be simply wet soil.
 
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