When to Plant Potatoes in Mobile, AL
Published: April 24, 2026
Potato Planting Dates for Mobile, AL
| Start seeds indoors | Year-round |
| Last frost (average) | February 1 |
| Direct sow outdoors | January 11–21 |
| Minimum soil temperature | 45°F |
| Expect first harvest | March 22 – May 11 |
| First fall frost (average) | December 15 |
⚠ Plant seed potatoes 2–4 weeks before last frost when soil is workable and above 45°F. Hill soil up around stems as plants grow. Needs well-drained, loose soil.
Best Potato Varieties for Mobile, AL
Consult a Mobile-area nursery or your state extension office for potato varieties proven in Zone 8b.
Growing Potatoes in Mobile
Mobile sits in Zone 8b, with an average last frost of February 1 and first fall frost around December 15 — giving a 317-day frost-free growing season. Cool-season crops like potato benefit from Mobile's cooler spring and fall windows, when temperatures stay in the 55–75°F sweet spot that produces the best flavor and least bolting.
In Mobile's warm climate, potato works best as a fall, winter, and early-spring crop. Summer heat bolts most cool-season vegetables before they can produce a harvestable head or root. Plan primary plantings in October through February in Mobile, not April through June.
Mobile's sandy soils drain fast — Mobile gardeners should water potato more frequently (every 2 to 3 days during peak summer) and add generous compost to improve moisture retention. Raised beds with amended soil perform significantly better than in-ground planting in sandy conditions. Target 1.5 inches of total water per week, split across several irrigation sessions rather than one deep soaking.
Potato Calendar for Mobile
| Month | Task |
|---|---|
| Year | Start seeds indoors under grow lights |
| February | Last frost — soil warming, prepare bed |
| January | Direct sow seeds into warm soil |
| March | Expect first harvest window to open |
| December | First fall frost — harvest remaining, end of outdoor season |
Potato Tips for Mobile Gardeners
- •Cut seed potatoes into 2-inch chunks with at least two eyes each, then let cut surfaces heal for 24–48 hours before planting.
- •Plant 4 inches deep and 12 inches apart in loose, well-drained soil; add compost but avoid fresh manure.
- •Plant cool-season potato in Mobile during October through February — spring plantings bolt before producing a usable crop in warm zones.
Common Potato Pests in Mobile
- •Colorado Potato Beetle — peaks June–August in Zone 8b (active March–October); monitor closely during peak season and treat early.
- •Wireworm — peaks June–August in Zone 8b (active March–October); orange-brown beetle larvae in soil; trap with cut potato pieces buried in soil.
- •Potato Scab — peaks June–August in Zone 8b (active March–October); monitor closely during peak season and treat early.
Check plants every 2–3 days during peak season — early intervention prevents most infestations from becoming serious.
What to Plant with Potatoes in Mobile
In Mobile's warm climate, Bean and Corn are the most beneficial plants to grow alongside potato. Bean improves nearby plant health and pest resistance. Keep potato away from Tomato — it competes for nutrients or shares pest pressure. Warm-climate gardeners especially benefit from dense, layered companion plantings that shade soil and reduce water loss.
Frequently Asked Questions
When should I plant potato in Mobile, AL?
In Mobile (Zone 8b), direct sow potato around January 11–21. Soil must be at 45°F or warmer at 2-inch depth before sowing — cold soil rots the seeds.
What zone is Mobile, AL for potato growing?
Mobile is USDA Zone 8b. For potato, this means a frost-free growing season of roughly 45 weeks running from February 1 to December 15. Cool-season crops like potato thrive in this zone with both spring and fall planting windows available.
When is potato harvest season in Mobile?
Expect the first potato harvest in Mobile around March 22, with harvest continuing through May 11. This is based on 70–120 days from transplant or direct sow.
How long does it take to grow potato in Mobile, AL?
From transplant or direct sow to first harvest, potato takes 70–120 days in Mobile's climate. Based on a typical planting date of January 11–21, expect your first harvest around March 22. Mobile's warm Zone 8b climate tends toward the faster end of this range — warmer soil and longer days accelerate maturity.
What soil does potato need in Mobile?
Mobile's sandy soils drain fast and lose nutrients quickly — a challenge for potato which prefers steady moisture. Add 4–6 inches of compost annually to improve moisture retention. Water more frequently but with less volume per session, and mulch heavily to reduce evaporation.