Northern hackberry is an interesting tree. We have found them all over Ann Arbor. Over the years we often found nipple galls, caused by Pachyscylla larvae. But the trees also are home to several species of lichens as well.
Here are some Pachyscylla galls on hackberry leaves. But this tree had a series of surprises for us.
Here are two evergreen bagworm moth cocoons. Even experienced moth fans might miss these since these “should not” be in deciduous trees.
This one was closer to what you would see in a conifer.
This one was the closest to what we would typically see in an evergreen.
Interestingly, there was a hedge of arborvitae across the walk from these only 6-8 feet away. So the question is why did all of these choose the hackberry?
More later…
Michael's Place 
I went to a Learn 10…Shrubs yesterday at Moutain Top Arboretum in Tannersville, NY, sponsored by the NY Flora Association. We did not see a hackberry bush so will look to see if they’re native here. NYFA has these Learn 10 trees, Shrubs, mosses, etc which teaches people how to key it out with a locally forged key–very fun and satisfyingly educational. Mary Ann Hitt
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