Please Help Identify Pest/Disease on Blackberry Leaves
I've been searching around the web trying to find what might be affecting my new blackberry plants leaves, but nothing so I haven't been able to find anything that seems to match my problem.
The cuts seen here didn't start out discolored, they were clean and green almost like they had been just sliced with a knife or just bent and cracked. New cuts/cracks have developed since taking the plant home (bought at Home Depot) so it doesn't appear to be transportation damage... the only pest I've seen so far are snails, but I moved all my plants to the middle of my gravel bed since I read they won't cross scratchy rocks. And out of about 30 various black/blue/rasp/strawberry plants I've got going, this is the only one showing this problem
This is my first garden so I've not experienced anything like this before, if anyone knows what is happening that would be great to identify the issue so I can know how to fight it! :)