I bought some Johnson's watercress seeds (Nasturtium officinale, but not related to nasturtiums). When I googled growing them, an American site said to plant them in 1 gallon pots (figured out that is an 8" pot) and stand the pot in 3" of water.
Instructions on packet say plant as normal and keep moist.
Has anyone any experience of this?
I planted American land cress a few years ago, but it was much too peppery for my palette.