"Uniform greens blossom,/their spirits are slowly crushed by their own glamour."... I think maybe a semicolon would be better instead of a comma?

"the pure joy and the debilitating sadness of it all."... I don't think you need that second the there. It's a bit wordy and repetitive.

I like this piece. Your descriptions are really great, very bittersweet. I also think you used punctuation and line breaks well.

I had to concentrate a lot reading it, but it makes one look even closer at the great content :-)

Beautifully written! Fall's my favourite season of the year because of its melancholy and quiet sadness - and I think you caught that perfectly!