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When to Plant Tomatoes in Adams County, MS

Tomatoes are the most popular home garden crop, available in thousands of varieties from tiny cherries to massive beefsteaks. They are warm-season plants needing full sun.

Adams County, Mississippi is in USDA Zone 8a. The average last spring frost is March 10 and the first fall frost is November 12, giving you a growing season of approximately 247 days.

At an elevation of 458 feet, Adams County receives approximately 54.1 inches of rainfall annually with predominantly clay loam soil. Summer highs average 97ยฐF, so Tomatoes may need afternoon shade and extra watering during peak heat. Clay soil retains moisture well for Tomatoes, but amend with compost to improve drainage and prevent root rot. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Tomatoes root diseases.

Adams County, MS (Zone 8a) Long season
247 days
Last Spring Frost March 10
247 growing days
First Fall Frost November 12

Adams County Soil Profile

Soil Type

Clay Loam

Soil pH

5.6-6.2

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (94 days to spare)
Start indoors: Jan 15 Transplant: Mar 19 🍅 Harvest: May 21 – Jul 30
Recommended (50%) ✓ Fits season (100 days to spare)
Start indoors: Jan 20 Transplant: Mar 24 🍅 Harvest: May 26 – Aug 4
Safe Start (90%) ✓ Fits season (89 days to spare)
Start indoors: Feb 18 Transplant: Apr 22 🍅 Harvest: Jun 24 – Sep 2

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
You supply
0.1″/week
Watering frequency Only during dry spells
Season total 176 gal / 100 sq ft
Tomatoes needs ~1,649 GDD — county provides 5,619 GDD Excellent fit

Tomatoes Planting Timeline โ€” Adams County, MS

Tomatoes Planting Calendar

Activity When Date Range
Start Indoors January 20 Jan 20 โ€“ Feb 3
Transplant Outdoors March 24 Mar 24 โ€“ Apr 7
Direct Sow March 17 Mar 17 โ€“ Apr 7
Harvest May 26 May 26 โ€“ Aug 4

Plant 0.5" deep ยท 24" apart ยท Rows 36" apart

Month-by-Month Timeline

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

Growing Conditions

Sun

Full Sun (6-8+ hours)

Water

Moderate โ€” regular watering

Days to Maturity

60โ€“85 days

Soil pH

6 โ€“ 7

USDA Zone

Zone 8a

Growing Season

247 days

Growing Tips for Adams County

Start seeds indoors 6-8 weeks before last frost. Bury transplants deep to encourage rooting along the stem. Provide consistent moisture to prevent blossom end rot and cracking.

Companion Planting

Good Companions

Avoid Planting Near

  • Cabbage
  • Fennel
  • Potatoes

Level Up Your Garden

๐ŸŒพ Save Your Own Tomatoes Seeds
Life Cycle Annual
Pollination Self-Pollinating
How to Collect Scoop seeds from ripe fruit; ferment 2-3 days to remove gel coating.
Storage Store airtight; viable 4-6 years at 35ยฐF, under 45% humidity.

Isolate 25 ft between varieties for purity. Use open-pollinated varieties for true-to-type seeds.

Frequently Asked Questions

When should I plant Tomatoes in Adams County, MS?

Adams County is in Zone 8a with an average last frost of March 10. Plan your Tomatoes planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Adams County, MS?

Adams County, Mississippi is in USDA Hardiness Zone 8a. The average last spring frost is March 10 and first fall frost is November 12.

๐ŸŒฑ

Plan Your Garden with Confidence

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

Get Your Free Garden Planner →

Free download. Plan your entire garden season in minutes.

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