Growing Potatoes in a Fabric Grow Bag: Space-Saving Harvest on Patios & Decks

If Planting Is Delayed

Same as in-ground: cool (40–50 °F), lit storage. Chubby sprouts good; long pale shoots bad.

Bag Planting & Care

1. Setup: 2–3 weeks pre-frost; sunny, free-draining spot. 6″ quality potting mix + 3–4 qt compost/aged manure.
2. Plant: 3 tubers per bag, 2–3″ deep. Water in.
3. Early Care: Keep top inch moist but not soggy—tubers rot if too wet.
4. Hill: At 6–8″ height, add mix leaving 4″ exposed. Repeat as plants grow.
5. Pests & Water: Same as in-ground (Bt, Pyola®/Neem; 1″/week).

Harvest & Storage

Same timelines as in-ground. Dump bag to find all tubers. Cure 2 weeks, store dark 35–40 °F in paper bags.

Next Year

Replace potting mix annually. Clean seed, pH ≤6.5, no fresh manure.