The best way to tell if your asparagus is going bad is to look at the tips, they will begin to turn a very dark green (almost black) and when you touch them they will just mush between your fingers.

How can you tell if asparagus is bad?

Is it bad to eat old asparagus?

Once you notice slimy and softy parts, you should avoid consuming them. Throw them away instead since such veggies will go bad quickly. Mushy tips and stems mean that asparagus is no longer edible and healthy.