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When to Plant Komatsuna in Dixie County, FL

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.

Dixie County, Florida is in USDA Zone 9a. The average last spring frost is March 11 and the first fall frost is November 23, giving you a growing season of approximately 257 days.

At an elevation of 428 feet, Dixie County receives approximately 55.1 inches of rainfall annually with predominantly sand soil. Summer highs average 101ยฐF, so Komatsuna may need afternoon shade and extra watering during peak heat. Sandy soil warms quickly in spring โ€” great for early planting โ€” but Komatsuna will need more frequent watering and organic matter to retain nutrients. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Komatsuna root diseases.

Dixie County, FL (Zone 9a) Long season
257 days
Last Spring Frost March 11
257 growing days
First Fall Frost November 23

Dixie County Soil Profile

Soil Type

Sand

Soil pH

4.8-6

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (183 days to spare)
Start indoors: Feb 5 Transplant: Mar 5 🍅 Harvest: Apr 9 – May 14
Recommended (50%) ✓ Fits season (187 days to spare)
Start indoors: Feb 11 Transplant: Mar 11 🍅 Harvest: Apr 15 – May 20
Safe Start (90%) ✓ Fits season (193 days to spare)
Start indoors: Feb 27 Transplant: Mar 27 🍅 Harvest: May 1 – Jun 5

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.

Soil Compatibility in Dixie County

How your county's soil matches Komatsuna's growing requirements.

Soil pH

Your soil pH (4.8โ€“6.0) is more acidic than Komatsuna prefers (6.0โ€“7.5). Add garden lime to raise pH.

Soil Texture

Sandy soil in Dixie County warms quickly in spring but drains fast. Komatsuna will need more frequent watering and regular compost additions to retain nutrients.

Drainage

Drainage is adequate for Komatsuna.

Organic Matter

Organic matter is low (1.7%). Add 2-3 inches of compost before planting Komatsuna.

How to Plant Komatsuna

0.5"
Planting Depth
6"
Between Plants
12"
Between Rows

Fall planting: Sow 8 weeks before your first frost date for a fall harvest.

Succession Planting Komatsuna

8
successive plantings in your 257-day season

Sow every 4 weeks. Last sowing by Oct 04 to harvest before frost.

For a dedicated fall crop, sow by Sep 28.

Plant Water Budget

Plant needs
1.0″/week
Rainfall provides
0.9″/week
You supply
0.5″/week
Watering frequency 1-2 times/week
Season total 1,097 gal / 100 sq ft
Drought risk

Water stress score is 6/10 โ€” consider drought-tolerant varieties and mulching

Monthly Watering Guide for Komatsuna

Komatsuna needs approximately 1 inches of water per week (4.3" per month). Here's how your county's rainfall compares month by month.

Month Komatsuna Needs Rainfall You Supplement Action
Jan โ€” 2.3" 0" โ„๏ธ Dormant
Feb โ€” 3" 0" โ„๏ธ Dormant
Mar 4.3" 3.5" 0.8" ๐Ÿ’ง Light watering
Apr 4.3" 2.6" 1.7" ๐Ÿ’ง Light watering
May 4.3" 3.3" 1" ๐Ÿ’ง Light watering
Jun 4.3" 7.2" 0" โœ… Rainfall sufficient
Jul 4.3" 8.7" 0" โœ… Rainfall sufficient
Aug 4.3" 7.2" 0" โœ… Rainfall sufficient
Sep 4.3" 8.3" 0" โœ… Rainfall sufficient
Oct 4.3" 4.7" 0" โœ… Rainfall sufficient
Nov 4.3" 2" 2.3" ๐Ÿšฟ Regular watering
Dec โ€” 2.3" 0" โ„๏ธ Dormant

Water needs are for active growing months only (Marโ€“Nov in Dixie County). Supplement amounts are based on average rainfall โ€” actual needs vary with temperature, soil, and mulching.

Komatsuna Heat Requirements (GDD)

What are Growing Degree Days (GDD)?

Growing Degree Days measure the total warmth your plants receive during the growing season. Think of it as a "heat bank" โ€” every day above 50ยฐF deposits warmth that helps your plants grow.

Each plant needs a certain amount of accumulated heat to mature. If your county provides more GDD than the plant needs, it's a great fit. If it's close, you may want to choose faster-maturing varieties or start seeds indoors to get a head start.

Komatsuna needs ~1,094 GDD — county provides 6,617 GDD Excellent fit

Komatsuna Planting Timeline โ€” Dixie County, FL

Komatsuna Planting Calendar

Activity When Date Range
Start Indoors February 11 Feb 11 โ€“ Feb 25
Transplant Outdoors March 11 Mar 11 โ€“ Mar 25
Direct Sow February 18 Feb 18 โ€“ Mar 11
Harvest April 15 Apr 15 โ€“ May 20
Fall Sowing September 28 Sep 28 โ€“ Oct 12

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

Month-by-Month Timeline

MonthActivities
January โ€”
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

โ˜€๏ธ Sun

Partial Shade (3-6 hours)

๐Ÿ’ง Water

1"/week ยท 1-2 times/week

๐Ÿ“… Days to Maturity

35โ€“50 days

๐Ÿงช Soil pH

Needs 6โ€“7.5 ยท Your soil: too_acidic

๐Ÿ—บ๏ธ USDA Zone

Zone 9a

๐Ÿ“† Growing Season

257 days in Dixie County

Growing Tips for Komatsuna in Dixie County

Direct sow Komatsuna outdoors after March 11 in Dixie County when soil has warmed and frost danger has passed.

Sandy soil in Dixie County dries quickly โ€” mulch Komatsuna with 2-3 inches of straw and water deeply 2-3 times per week rather than lightly every day.

With summer highs reaching 101ยฐF in Dixie County, provide afternoon shade for Komatsuna and water deeply in the morning.

Your generous 257.0-day season in Dixie County allows multiple plantings of Komatsuna. Sow every 17.0 days for continuous harvest.

Common pests for Komatsuna in this region include cabbage worm and flea beetles. Use row covers early in the season and inspect plants weekly.

General growing tips

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

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Komatsuna in Dixie County, FL?

Dixie County is in Zone 9a with an average last frost of March 11. Plan your Komatsuna planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Dixie County, FL?

Dixie County, Florida is in USDA Hardiness Zone 9a. The average last spring frost is March 11 and first fall frost is November 23.

๐ŸŒฑ

Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Dixie County gardeners in Zone 9a organize planting dates, track what's growing, and never miss a planting window.

Get Your Free Garden Planner →

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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 Dixie County, FL. Local conditions may vary. Last updated: April 2026.