DocG,don't forget several species of invasive water plants,alewives,and the 5 species of salmon imported to eat the alewives.Throw in apples,lilacs,and countless other plants and insects like Gypsy moths,and we begin to get a picture of the human footprint here for better or worse.Anyone in Georgia want to discuss Kudzu?Oh yes,I meant to tell you before I got on my soapbox,ladybugs taste better with a little salt and butter.
And the emerald ash borer.
Cooked in butter? Or raw with a butter sauce?
I think every single one of us has made a bad choice, don't give up and keep persisting. I agree that some things aren't for the complete novice as I have discovered during my time. But keep with it, I am deflasking and growing plants I never thought I could after my initial failures.
It's a hobby of discovery and things will happen for you if you are patient.