One five gallon bucket can turn a single seed potato into a real harvest, and the grocery store never mentions it.
Fill a bucket with soil, plant one seed potato, and it fills the container with tubers by summer's end.
When the plant dies back, gardeners tip the bucket over and the potatoes roll out clean.
A porch lined with buckets stores real calories, which almost nothing else on a balcony can claim.
Find seed potatoes and growers near you on Localize.
Sources: Old Farmer's Almanac