More to explore:
How to grow sweet potatoes in a bucket - "If grown correctly, you can hope for a yield of about 25 pounds for each 20 gallon bucket sweet potato garden."
Quick crete, galvanized buckets, wood (smaller vs 4x4?), hooks, string lights = sweet deck/patio lighting. On to bug control for outdoor entertaining.
Can't wait to try this! Planting potatoes in layers inside, about a foot apart, saves space. Potatoes grow out the sides. Soon the tower is all green. When top growth dies back, simply tip over tower and pick up potatoes!
cast in place - sack finish
How to grow potatoes
Old Garden Gate...and a sweet heart
tips on growing peonies
Tutorial: Turn a 5 gallon bucket into cute garden storage and a weeding stool