They do take up a ton of space, though. They'll grow 15 feet easy, and can climb to 30 feet under the right conditions. When they get bushy and full, that's a LOT of plant.
As I wrote on Homebrew Talk, though:
Unfortunately, not everyone is blessed with space enough to grow their own hops. These aggressively growing bines can climb to upwards of 30 feet tall, spreading out bushy limbs covered in the fragrant hop cones we know and love. Most growers built tall poles or trellises for their hops, which require materials and yard space. But here’s what you may not know: You don’t actually need a huge yard or sprawling acreage to grow your own hops. In fact, if you get creative, you can even grow hops indoors – and we’re going to give you some tips how.
So how do you do it?
It's easier than you think! The trick to maximizing what little space you have is to realize that almost anything can be a suitable growing area for your hops. Surf over to "Growing Hops With Limited Space" at Homebrew Talk to check out advice and pictures by yours truly that will help you get a decent hop harvest even if you have little space to work with.
'Cause come on, wouldn't it be cool to have your deck covered like this?
So go check it out! Cheers!
And for more stuff by yours truly, check out my main blog (which includes lots of non-beer stuff).