Foraging for flowers is a quite different matter - it comes under the category of picking wild flowers which is not a good thing at all.
It is an interesting distinction. I find foraging for both food and flowers equally acceptable as long as you stick to sensible guidelines. I am not advocating picking scarce or endangered flowers from the wild or for diminishing the pleasure of walkers that come after you - I just find it an interesting distinction.
Anyway, as many wild flowers don't work well as cut flowers I thought it would be useful to mention a couple that do, which are very plentiful weeds and which you might even have (and be cursing) in wilder parts of your own garden. These are the flower equivalent of the food forager's nettles and sorrel, invasive, thuggish and beautiful.
The first is creeping buttercup, the lacquered bright yellow flowers that can easily take over damp grassland - these look fantastic higgledly piggledly in a jam jar and will last a week; in the past I have used them in more formal table arrangements mixed with garden flowers and they more than held their own. They are ideal on a table outside for an informal lunch as they don't wilt.
The second is flowering pignut - again a meadow flower that foragers dig up for the tubers - hazelnutty nuggets that taste great with a salad of sorel and oranges. I can't quite see why it would be socially acceptable to dig up the tuber but not to cut the flower . . .but it seems to be.
Anyway - if you want them to last, pick them into water, let them rest somewhere cool for an hour before arranging and then position away from fruit bowls and direct sun.
Remember there is a notebook giveaway on the next post down - I'm a bit worried - yesterday 648 people looked at this and only 5 people seemed to want a notebook enough to post a comment . . .