Steve Peek wrote:
"songbird" wrote:

zone 5 USA.

this area is likely to be flooded at
times (but not over the top) so that the
roots will likely be damp to wet for a
longer spells than many garden plants
might be liking.

Give water cress a try. It appears in sandy areas along my stream bank every
year.

My great grandparents harvested horseradish that grew along streams on
their dairy farms. Be cautioned that horseradish is extremely hard to
kill once it gets established.