(French,Lupin; German,Wolfsbohne), native of Southern Europe and adjacent Asia, a plant of about 2 feet high, with leaves cut palmately into five or seven divisions, 1 to 2 inches long, smooth above, and white, hairy, beneath. The flowers are in terminal racemes, on short footstalks...
you might think you should wait until every individual flower is wilting, but that's not a great idea. Experts recommend pruning when the flowers at the bottom of the spike are wilting, even if the top part of the spike looks good. To deadhead...