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When to Plant Scallions in Jackson County, MS

Scallions (green onions) are mild-flavored alliums harvested for their slender green tops and white bases. They are quick-growing and perfect for succession planting.

Jackson County, Mississippi is in USDA Zone 8b. The average last spring frost is March 2 and the first fall frost is November 26, giving you a growing season of approximately 269 days.

At an elevation of 182 feet, Jackson County receives approximately 57.7 inches of rainfall annually with predominantly sandy loam soil. Summer highs average 91ยฐF, providing good warmth for Scallions during the growing season. Sandy soil warms quickly in spring โ€” great for early planting โ€” but Scallions will need more frequent watering and organic matter to retain nutrients. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Scallions root diseases.

Jackson County, MS (Zone 8b) Long season
269 days
Last Spring Frost March 2
269 growing days
First Fall Frost November 26

Jackson County Soil Profile

Soil Type

Sandy Loam

Soil pH

5.1-6.1

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (193 days to spare)
Start indoors: Jan 10 Transplant: Feb 14 🍅 Harvest: Apr 11 – May 9
Recommended (50%) ✓ Fits season (185 days to spare)
Start indoors: Jan 26 Transplant: Mar 2 🍅 Harvest: Apr 27 – May 25
Safe Start (90%) ✓ Fits season (183 days to spare)
Start indoors: Feb 18 Transplant: Mar 25 🍅 Harvest: May 20 – Jun 17

Percentages indicate frost risk at transplant. The 70% safe window means there is a 30% chance of frost after transplant — suitable for cold-hardy crops or gardeners with frost protection. The 90% safe window is best for tender plants.

Plant Water Budget

Plant needs
1.0″/week
Rainfall provides
0.9″/week
Watering frequency Natural rainfall sufficient
Season total 0 gal / 100 sq ft
Scallions needs ~1,095 GDD — county provides 4,909 GDD Excellent fit

Scallions Planting Timeline โ€” Jackson County, MS

Scallions Planting Calendar

Activity When Date Range
Start Indoors January 26 Jan 26 โ€“ Feb 9
Transplant Outdoors March 2 Mar 2 โ€“ Mar 16
Direct Sow February 16 Feb 16 โ€“ Mar 9
Fall Sowing September 17 Sep 17 โ€“ Oct 1
Harvest April 27 Apr 27 โ€“ May 25

Plant 0.5" deep ยท 6" apart ยท Rows 12" apart

Month-by-Month Timeline

MonthActivities
January Start Indoors
February Start Indoors Direct Sow
March Transplant Outdoors Direct Sow
April Harvest
May Harvest
June โ€”
July โ€”
August โ€”
September Fall Sowing
October Fall Sowing
November โ€”
December โ€”

Growing Conditions

Sun

Full Sun (6-8+ hours)

Water

Moderate โ€” regular watering

Days to Maturity

50โ€“70 days

Soil pH

6 โ€“ 7

USDA Zone

Zone 8b

Growing Season

269 days

Growing Tips for Jackson County

Direct sow every 3 weeks for continuous harvest. Thin to 1 inch apart or grow in clusters. Harvest when pencil-thick by pulling or cutting at soil level.

Companion Planting

Good Companions

Avoid Planting Near

  • Peas
  • Green Beans

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Frequently Asked Questions

When should I plant Scallions in Jackson County, MS?

Jackson County is in Zone 8b with an average last frost of March 2. Plan your Scallions planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Jackson County, MS?

Jackson County, Mississippi is in USDA Hardiness Zone 8b. The average last spring frost is March 2 and first fall frost is November 26.

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Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Jackson County gardeners in Zone 8b organize planting dates, track what's growing, and never miss a planting window.

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Data sources: USDA Plant Hardiness Zone Map (2023), NOAA 30-Year Climate Normals. Frost dates are based on 50% probability averages for Jackson County, MS. Local conditions may vary. Last updated: April 2026.