Those decomposing leaves could be (and probably are) robbing your soil of nitrogen. Small amounts, perhaps, but none the less.
Your soil PH definitely won't benefit from decomposing plant matter either.
And yes, they are perfect breeding grounds for fungus/bacteria.
I would definitely remove that sort of thing, whether it be on the ground or on the soil.
Otherwise, your buds look awesome!!! Good luck, and healthy harvests to you!
thanks man im happy with my second grow want to see my harvest this time around i know it will be stronger than the last my last grow didnt have frosty leaves at all so i get to make some bubble hash with what ever is leftlovely looking lady! well done dude!
i wanna see how this turns out im tuned in!