What Size Container for Potatoes?
Bigger containers = bigger harvests
Quick Answer
Use 10-15 gallon containers minimum for potatoes. They need at least 12-16 inches of depth for hilling. Fabric grow bags are excellent - breathable, easy to harvest, and prevent rot. Expect 3-8 lbs per 10-15 gallon container.
Container Size & Expected Yield
| Container | Seed Potatoes | Expected Yield | Rating |
|---|---|---|---|
| 5 gallon bucket | 1 | 2-4 lbs | Minimal |
| 7 gallon grow bag | 1-2 | 3-5 lbs | Okay |
| 10 gallon grow bag | 2-3 | 5-8 lbs | Good |
| 15 gallon grow bag | 3-4 | 8-12 lbs | Great |
| 20 gallon grow bag | 4-5 | 10-15 lbs | Excellent |
Why Potatoes Need Large, Deep Containers
Hilling Space
Potatoes form along buried stems. You need room to add soil as plants grow, encouraging more tuber development.
Prevent Green Potatoes
Exposed potatoes turn green and toxic. Deep containers keep tubers covered and away from sunlight.
Temperature Control
More soil mass keeps roots cooler. Potatoes stop forming tubers when soil exceeds 80°F.
Moisture Retention
Larger containers retain moisture better. Consistent moisture produces smooth, well-formed potatoes.
Best Container Types for Potatoes
- Fabric Grow Bags: Best option. Breathable, prevents rot, easy harvest (dump and pick), affordable
- Potato Grow Bags with Flap: Side flap lets you harvest new potatoes without disturbing the plant
- Large Plastic Pots: Work fine, drill extra drainage holes, harder to harvest
- 5-Gallon Buckets (stacked): DIY option - stack 2-3 buckets, cut bottoms, allows hilling
Frequently Asked Questions
Can I grow potatoes in a 5-gallon bucket?
Yes, but yields will be small (2-4 lbs per bucket). Use 10-15 gallon containers for better harvests. Drill lots of drainage holes - potatoes hate waterlogged soil.
How many seed potatoes per container?
5-gallon: 1 seed potato. 10-gallon: 2-3 seed potatoes. 15-gallon: 3-4 seed potatoes. Larger containers allow for better hilling and more tubers.
Why do potatoes need such deep containers?
Potatoes form along buried stems. You need depth to 'hill up' soil as plants grow - this encourages more tuber formation and prevents green potatoes from sun exposure.
What's better for potatoes: grow bags or hard pots?
Grow bags are often better - they're breathable (preventing rot), easy to dump at harvest, lightweight, and affordable. 10-15 gallon fabric grow bags are ideal for potatoes.