How long does fresh parsley keep in the fridge?
If you stand it up in water like a flower, these guys say 7 to 10 days. I say 2 weeks, even.

That link has a freezing technique, but I think thawed parsley is worthless. Dehydrated is okay when you've no option, but it's very bland and too earthy, to me. Where I live, it's cheap, so I just stay stocked up on fresh stuff. Both parts of this advice goes for bundles of cilantro leaves as well.