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When to Plant Daikon in Zavala 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.

Zavala County, Texas is in USDA Zone 8b. The average last spring frost is February 26 and the first fall frost is November 29, giving you a growing season of approximately 276 days.

At an elevation of 4,905 feet, Zavala County receives approximately 59.7 inches of rainfall annually with predominantly loam soil. Summer highs average 93ยฐF, providing good warmth for Daikon during the growing season. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Daikon root diseases.

Zavala County, TX (Zone 8b) Year-round
276 days
Last Spring Frost February 26
276 growing days
First Fall Frost November 29

Zavala County Soil Profile

Soil Type

Loam

Soil pH

6.4-7.4

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (198 days to spare)
Transplant: Feb 12 🍅 Harvest: Apr 9 – May 7
Recommended (50%) ✓ Fits season (192 days to spare)
Transplant: Feb 26 🍅 Harvest: Apr 23 – May 21
Safe Start (90%) ✓ Fits season (184 days to spare)
Transplant: Mar 23 🍅 Harvest: May 18 – Jun 15

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 Zavala County

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

Soil pH

Your soil pH (6.4โ€“7.4) overlaps with Daikon's range (5.8โ€“7.0), though not a perfect match.

Soil Texture

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

Organic Matter

Organic matter is low (1.9%). Add 2-3 inches of compost before planting Daikon.

How to Plant Daikon

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

Fall planting: Sow 10 weeks before your first frost date for a fall harvest.

Succession Planting Daikon

6
successive plantings in your 276-day season

Sow every 5.7 weeks. Last sowing by Sep 20 to harvest before frost.

For a dedicated fall crop, sow by Sep 20.

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 234 gal / 100 sq ft

Monthly Watering Guide for Daikon

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

Month Daikon Needs Rainfall You Supplement Action
Jan โ€” 1.4" 0" โ„๏ธ Dormant
Feb 4.3" 1.9" 2.4" ๐Ÿšฟ Regular watering
Mar 4.3" 3.2" 1.1" ๐Ÿ’ง Light watering
Apr 4.3" 6.7" 0" โœ… Rainfall sufficient
May 4.3" 8.7" 0" โœ… Rainfall sufficient
Jun 4.3" 10.5" 0" โœ… Rainfall sufficient
Jul 4.3" 6.5" 0" โœ… Rainfall sufficient
Aug 4.3" 7.8" 0" โœ… Rainfall sufficient
Sep 4.3" 5.9" 0" โœ… Rainfall sufficient
Oct 4.3" 3.5" 0.8" ๐Ÿ’ง Light watering
Nov 4.3" 2" 2.3" ๐Ÿšฟ Regular watering
Dec โ€” 1.6" 0" โ„๏ธ Dormant

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

Daikon 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.

Daikon needs ~1,185 GDD — county provides 5,470 GDD Excellent fit

Daikon Planting Timeline โ€” Zavala County, TX

Daikon Planting Calendar

Activity When Date Range
Direct Sow February 12 Feb 12 โ€“ Mar 5
Harvest April 9 Apr 9 โ€“ May 7
Fall Sowing September 20 Sep 20 โ€“ Oct 4

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

Month-by-Month Timeline

MonthActivities
January โ€”
February Direct Sow
March 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

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 8b

๐Ÿ“† Growing Season

276 days in Zavala County

Growing Tips for Daikon in Zavala County

Direct sow Daikon outdoors after February 26 in Zavala County when soil has warmed and frost danger has passed.

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

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Daikon in Zavala County, TX?

Zavala County is in Zone 8b with an average last frost of February 26. Plan your Daikon planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Zavala County, TX?

Zavala County, Texas is in USDA Hardiness Zone 8b. The average last spring frost is February 26 and first fall frost is November 29.

๐ŸŒฑ

Plan Your Garden with Confidence

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