Rotating Your Vegetable Container Crops

Potatoes - Once you grow a container full of potatoes, you shouldn't plant potatoes in that container again for three years, to allow the soil to replenish itself and prevent Potato Scab. Also, avoid rotating your potatoes into other containers which have had different root crops grown in them the year before, like turnips, beets and carrots, because these crops are also prone to developing scab. Dry soil also causes scab, so make sure your potatoes have enough water at the time of tuber set, which is a month or two after planting.
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March 7, 2015 - I've marked my large rubbermaid pots "1 to 4" to keep track of what's been planted over the years and hopefully avoid some of the problems from planting crops in the same soil year after year.
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Year #2: 
Pot #1 - Kale, Lettuce
Pot #2 - Potatoes
Pot #3 - Beans, Radishes
Pot #4 - Cucumbers, Radishes, Carrots 
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Year #3:
Pot # 1 - Kale
Pot # 2 - Kale
Pot # 3 - Carrots, Cucumbers
Pot # 4 - Cucumbers
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