Joe J wrote:
Are there any reasons besides looks, to mow the grass growing on a mound
septic system? 2.5 acres and it's all grass and I would just like to let
some of it grow wild, maybe throw out a few thousand wildflower seeds
and cut in some walking paths and let a lot of the rest of the grass
just grow, including what's on the mound. Any negatives to not cutting
the grass on the mound?

No reason. Raspberries grow real well in drainage fields and cesspools.
They love sewerage black water.

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You don't have to be stupid to know stupid when you see it.