My bog will not be acting as a filter but more of an overflow collection from the pond. It's going to wrap around my waterfall and fill a 4' gap between my pond and the fence that will run about 8 ft in length.

I was thinking that I would create a berm of excavated soil to separate from the pond, line the entire bog, and put a few punctures in the liner for drainage. (Is that wrong?)
THen i plan to fill the first 2' wide section with gravel and maybe a few river rocks, and plant some carnivorous plants & maybe some money wort.

For the remaining area, I am thinking I'll just mix together the soil with some gravel & peat, and plant calla lilies, cranberries, maybe even try some celery and asparagus?

Behind the pond is still very wet but decreasingly so, i want to add some peat & sand to the soil & try blueberries and raspberry shrubs.

Does anybody see any flaws in this?

Ive never been able to grow anything i planted but I really really want my pond & bog to work! HELP!