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When to Plant Komatsuna in Brooks County, GA

Komatsuna (Japanese mustard spinach) is a versatile Asian green with glossy, dark leaves and a mild, sweet flavor. It is extremely cold-hardy and heat-tolerant.

Brooks County, Georgia is in USDA Zone 8b. The average last spring frost is March 5 and the first fall frost is November 22, giving you a growing season of approximately 262 days.

At an elevation of 425 feet, Brooks County receives approximately 48.9 inches of rainfall annually with predominantly clay loam soil. Summer highs average 93ยฐF, providing good warmth for Komatsuna during the growing season. Clay soil retains moisture well for Komatsuna, but amend with compost to improve drainage and prevent root rot.

Brooks County, GA (Zone 8b) Long season
262 days
Last Spring Frost March 5
262 growing days
First Fall Frost November 22

Brooks County Soil Profile

Soil Type

Clay Loam

Soil pH

5.7-6.6

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (198 days to spare)
Start indoors: Jan 17 Transplant: Feb 21 🍅 Harvest: Mar 28 – May 2
Recommended (50%) ✓ Fits season (192 days to spare)
Start indoors: Jan 29 Transplant: Mar 5 🍅 Harvest: Apr 9 – May 14
Safe Start (90%) ✓ Fits season (196 days to spare)
Start indoors: Feb 19 Transplant: Mar 26 🍅 Harvest: Apr 30 – Jun 4

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
0.8″/week
Watering frequency Natural rainfall sufficient
Season total 0 gal / 100 sq ft
Komatsuna needs ~839 GDD — county provides 5,174 GDD Excellent fit

Komatsuna Planting Timeline โ€” Brooks County, GA

Komatsuna Planting Calendar

Activity When Date Range
Start Indoors January 29 Jan 29 โ€“ Feb 12
Transplant Outdoors March 5 Mar 5 โ€“ Mar 19
Direct Sow February 19 Feb 19 โ€“ Mar 12
Fall Sowing September 13 Sep 13 โ€“ Sep 27
Harvest April 9 Apr 9 โ€“ May 14

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 โ€”
November โ€”
December โ€”

Growing Conditions

Sun

Partial Shade (3-6 hours)

Water

Moderate โ€” regular watering

Days to Maturity

35โ€“50 days

Soil pH

6 โ€“ 7.5

USDA Zone

Zone 8b

Growing Season

262 days

Growing Tips for Brooks County

Direct sow in spring or fall. One of the most forgiving Asian greens for all seasons. Harvest outer leaves or cut whole plants. Excellent for stir-fries, soups, or salads.

Companion Planting

Good Companions

Avoid Planting Near

  • Strawberries

Level Up Your Garden

Frequently Asked Questions

When should I plant Komatsuna in Brooks County, GA?

Brooks County is in Zone 8b with an average last frost of March 5. Plan your Komatsuna planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Brooks County, GA?

Brooks County, Georgia is in USDA Hardiness Zone 8b. The average last spring frost is March 5 and first fall frost is November 22.

๐ŸŒฑ

Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Brooks 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 Brooks County, GA. Local conditions may vary. Last updated: April 2026.