So, I do this during autumn. Starting at September, I shake all my perfect pear trees until they die around December. It fits a lot. But I have a question? Do dead trees count as trees for the perfect town rating? Ok, that is all.
I had to look it up to make sure. But my town also has a fair amount of dead trees, around 10 or so, (I have a haunted forest part) and I've never lost perfect town status! Stumps don't count as trees though.