The conventional wisdom on nasturtiums is not that they don't like
fertilizer - merely that they will produce lusher, bigger foliage and fewer
flowers than they do in poorer soil. That being said, the nasturtiums I
planted in rich potting soil are HUGE and flower-laden right now - and since
I planted the vining/trailing variety, have now made a carpet 4-6 feet
around every pot. I also planted some seeds in a dry-shade area with some
difficult root competition issues as an experiment - and they did nothing
all summer long. Only one has bloomed - a single bloom.
/