Asparagus is one of my favorite summer time veggies. A tip that I found in one of my millions of magazine clippings is to cut off the bottoms of the stalks and stick them in a glass of water in your fridge to make them last longer. Essentially they are still respiring water like flowers do, and if you put them in water you can keep them rigid and last a bit longer.
I tried it out and it really works!!!