Great Fermentations is doing pre-orders for hop rhizomes again this year. They’ve got 13 different strands ranging from 3.5% to 15.5% Alpha Acid. They take about two years to actually start producing a good crop, but I don’t think they are very hard to maintain. Here’s a wiki I’ve found for growing them. Who knows, once you get a good yield you may even be able to trade your stash for some homebrew… (hint). No brewer I know would ever turn down fresh hops! Either way, it might be worth dropping by their shop or webpage.