Yeah, it's a circle, about half a meter wide. I just used spare pieces I had left, but it could be a bit bigger, maybe 2½ feet wide would be the maximum I would go. You're supposed to be able to grow about 30-40 kg in one tower, but we like new potatoes and harvested enough for one meal a bit early (also, the chickens have been eating the leaves which really cuts down on production). The straw lining really keeps moisture in nicely, so they're relatively care free. I wouldn't completely depend on these the first time you try them, but you could start with maybe four towers and see how they do. We are more hobby farmers than people who depend on our garden, so we like experimenting. If you have many mouths to feed, harvesting these would be really easy too, you could just tip the tower over when it's time to collect potatoes. Now we just dug around there a bit and collected from the top layer, it gave us about a liter of new potatoes, but there's still plenty left in them and if we have the patience to wait longer the potatoes will grow bigger. We also used an early maturing variety to get the kind of potatoes we like, but with something a bit slower growing that reaches bigger size you could get a pretty nice amount of taters.Is that a circle of fencing? You get enough potatoes for how long? We go through a lot of potatoes.
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