I have a fairly small garden (due to a city sized lot) so I am somewhat limited on planting any kind of space invading vegetable. While a potato plant itself doesn't take up much space, enough potato plants to get a good crop would take up quite a bit! I have always wanted to grow potatoes, but have never had the room to do it, or so I thought, until I came across a great idea in John Seymour's book 'The Self Sufficient Life and How to Live it' (great book, by the way). He instructed the reader on how to grow potatoes in a bin (pot or barrel) on your patio!
This is what he said: 'Growing potatoes in bins is particularly useful if your space if limited - even a patio will do. Take an old garbage can, and fill about a sixth of it with soil. Plant one or more potato sets. When the plants have grown, but before they flower, put another layer of soil on. Continue building up layers of soil as the plants appear, until they reach about 4 ft. When the potatoes are ready for harvesting, simply empty out the bin and you'll find you have a surpisingly heavy crop.'
If you suffer from lack of space, as I do, join me in trying this out!!! I am on the scout for a neat looking barrel, but if all else fails, I am going to grow them in a couple huge pulp pots (nested one on top of the other, with the bottom of the top pot cut out so it can nest down on the base pot).
I would love to hear more ideas from you gardeners out there on what you do with your space!