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When to Plant Daikon in Calhoun County, TX

Daikon is a large, mild Japanese radish that can grow over a foot long. It is excellent for pickling, stir-fries, and as a soil-breaking cover crop.

Calhoun County, Texas is in USDA Zone 9a. The average last spring frost is February 16 and the first fall frost is December 7, giving you a growing season of approximately 294 days.

At an elevation of 215 feet, Calhoun County receives approximately 59.5 inches of rainfall annually with predominantly loam soil. Summer highs average 99ยฐF, so Daikon may need afternoon shade and extra watering during peak heat. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Daikon root diseases.

Calhoun County, TX (Zone 9a) Year-round
294 days
Last Spring Frost February 16
294 growing days
First Fall Frost December 7

Calhoun County Soil Profile

Soil Type

Loam

Soil pH

6.2-7.8

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (227 days to spare)
Transplant: Jan 23 🍅 Harvest: Mar 20 – Apr 17
Recommended (50%) ✓ Fits season (210 days to spare)
Transplant: Feb 16 🍅 Harvest: Apr 13 – May 11
Safe Start (90%) ✓ Fits season (201 days to spare)
Transplant: Mar 10 🍅 Harvest: May 5 – Jun 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.

Soil Compatibility in Calhoun County

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

Soil pH

Your soil pH (6.2โ€“7.8) overlaps with Daikon's range (5.8โ€“7.0), though not a perfect match.

Soil Texture

The loam soil in Calhoun County is excellent for Daikon โ€” good drainage, moisture retention, and nutrient holding capacity.

Organic Matter

Organic matter is moderate (2.2%). Annual compost additions will help Daikon.

How to Plant Daikon

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 Daikon

7
successive plantings in your 294-day season

Sow every 5.7 weeks. Last sowing by Sep 28 to harvest before frost.

For a dedicated fall crop, sow by Oct 12.

Plant Water Budget

Plant needs
1.0″/week
Rainfall provides
0.9″/week
You supply
0.2″/week
Watering frequency Only during dry spells
Season total 401 gal / 100 sq ft
Daikon needs ~1,455 GDD — county provides 7,153 GDD Excellent fit

Daikon Planting Timeline โ€” Calhoun County, TX

Daikon Planting Calendar

Activity When Date Range
Direct Sow January 26 Jan 26 โ€“ Feb 16
Fall Sowing October 12 Oct 12 โ€“ Oct 26
Harvest March 23 Mar 23 โ€“ Apr 20

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

Month-by-Month Timeline

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

Growing Conditions

โ˜€๏ธ Sun

Full Sun (6-8+ hours)

๐Ÿ’ง Water

1"/week ยท Only during dry spells

๐Ÿ“… Days to Maturity

50โ€“70 days

๐Ÿงช Soil pH

Needs 5.8โ€“7 ยท Your soil: acceptable

๐Ÿ—บ๏ธ USDA Zone

Zone 9a

๐Ÿ“† Growing Season

294 days in Calhoun County

Growing Tips for Daikon in Calhoun County

Direct sow Daikon outdoors after February 16 in Calhoun County when soil has warmed and frost danger has passed.

With summer highs reaching 99ยฐF in Calhoun County, provide afternoon shade for Daikon and water deeply in the morning.

Common pests for Daikon 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 late summer for fall harvest. Loosen soil deeply before planting. Thin seedlings to 6 inches apart. Harvest before hard freeze as exposed shoulders may crack.

Companion Planting

Good Companions

Avoid Planting Near

  • Hyssop

Level Up Your Garden

Frequently Asked Questions

When should I plant Daikon in Calhoun County, TX?

Calhoun County is in Zone 9a with an average last frost of February 16. Plan your Daikon planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Calhoun County, TX?

Calhoun County, Texas is in USDA Hardiness Zone 9a. The average last spring frost is February 16 and first fall frost is December 7.

๐ŸŒฑ

Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Calhoun County gardeners in Zone 9a 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 Calhoun County, TX. Local conditions may vary. Last updated: April 2026.