see mine in my blog below
the drainfield was about 60 x 60 feet..and it was raised 4'..we had it backfilled with good soil from our property and i planted the backfill around the drainfield, leaving a lovely
lawn circle on top of the drainfield..at the far end I put in an arbor and planted grapes and roses up the arbor and then beyond I put down a path to the east and steps to the North..also nearer the house are two paths going down on either side.
directly on the drainfield itself is only lawn, it took a long time to establish ..it has
alot of wildlings in it like dandelion, clover, yarrow, etc..as well.
all around it is garden..it is mostly
perennial flowering plants like iris, and daylilly, herbs and other perennials (daisy, coneflower, phlox, gaillardia, and on and on) then as you go DOWN from the actual drainfield into the fll there are lilacs, honeysuckle bushes, cherry
trees, smoke bushes, roses, etc..
when you get down to the level at the bottom of the slope there is a lawn again..so access is from the lawn on all sides..or paths..it makes a lovely garden..i have a lot of photos of it on the blog below