SATS

I
live in Belgium near to one of the major rivers. The local authority
opened up a new field of allotments and I have taken 100 sq m. Some
gardners were busy in 2016 although 2017 will be my first year. There
is an overgrown small water course nearby which is affecting some
plots although mine seems to be reasonably away from this. The
trouble is, the whole area is in somewhat of a seasonal flood plain.
As an example of this, the top of the local church spire is 3' 9”
away from where it should be, fortunately the tower is falling into
the rest of the building which seems to have slowed its progress
somewhat. Some gardners have gone for raised beds and there is water
in the bottom of some of the trenches. All is not bad though, many
gardners have had success with their crops last year and there are
many commercial corn farms in the area. When I told a gardening
neighbour I was thinking of growing potatoes I got back one of those
“You can try it if you like” looks. I have more or less decided
to try a few carrots, beets and sweeds just to see what happens. If
you don't try you don't know. Potatoes are another thing though. I
was wondering if I could grow these above ground in black refuse
sacks with a few drainage holes in the bottom, inside a wire mesh
cage and raise the sack and the soil level as the plant grows. Is
this a reasonable option or is it a no brainer?

Thanks.