I've had parsley last the entire winter, too. Unfortunately, the flat leaf types are simply too vigorous, to grow in hydro. And parsley is one of those herbs that doesn't taste right dried, to me, along with basil, cilantro, and a few others, so I always have them fresh.
On the topic of herbs, yesterday I saw a PBS show by accident - it was on when I turned the TV on, so I rewound it to the beginning, and watched it all - Movers and Makers - City Of Soil: A look at Philadelphia's Urban Agriculture. I couldn't stop watching it, and how some of these people were getting people into farming, when they had "never touched any soil in their life"! And I noticed this seed company, I had never seen before, that is sort of a local non-profit company, that actually sells seeds from many different farmers, and when I checked the website, I saw a number of unusual seeds I have seen before, and some I've gotten before, but not had luck with, so I tried them again! Every seed pack is $5.00 - not super cheap, but most with a good number of seeds, and it was only $4.54 for shipping 8 packs. Here's the link:
Truelove Seeds is a farm-based seed company offering culturally important and open pollinated vegetable, herb, and flower seeds. Our seeds are grown by more than 20 small-scale urban and rural farmers committed to community food sovereignty, cultural preservation, and sustainable agriculture.
trueloveseeds.com
The unusual herbs I got are HUACATAY - a South American herb, that is in the Marigold family, and is also called "Black Mint", and has flavor similar to cilantro, with other flavors. Tried this year's ago, but no germination.
QUILLQUIÑA - a.k.a. Bolivian Coriander. Another South American herb, also used in southern Mexico, which is what interests me.
SHEVID - a.k.a. Persian Dill. Piqued my interest, to see if it will be more for leaves, than seeds.
LEBANESE ZA'ATAR - The true za'atar, I got from Baker Creek years ago, but didn't do well, so I'll try again.
Another unusual thing that I ordered, that I grew one variety of years ago, from Trade Winds Fruit, was Pea Eggplant this one is
DARK PEA EGGPLANT - this one from Central America, and only 4-5' tall, compared to the one I grew that was over 8' tall! Similar bitter flavor, which I only use for Thai curries.
Another thing I ordered was a MIZUNA LANDRACE - a broadleaf variety I've never seen before, so I had to try it. There were a couple of other things I just ordered as replacements, for old seeds, not unusual ones, like the rest.
Update - I ordered this later Saturday night, and Monday I got an email saying that the order was being shipped!