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When to Plant Daikon in Galveston 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.

Galveston County, Texas is in USDA Zone 9a. The average last spring frost is February 5 and the first fall frost is December 7, giving you a growing season of approximately 305 days.

At an elevation of 9 feet, Galveston County receives approximately 72.5 inches of rainfall annually with predominantly sandy loam soil. Summer highs average 100Β°F, so Daikon may need afternoon shade and extra watering during peak heat. Sandy soil warms quickly in spring β€” great for early planting β€” but Daikon will need more frequent watering and organic matter to retain nutrients. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Daikon root diseases.

Galveston County, TX (Zone 9a) Year-round
305 days
Last Spring Frost February 5
305 growing days
First Fall Frost December 7

Galveston County Soil Profile

Soil Type

Sandy Loam

Soil pH

5.7-6.5

Drainage

Well Drained

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 β€” 2.1" 0" ❄️ Dormant
Feb 4.3" 2.2" 2.1" πŸ’§ Light watering
Mar 4.3" 5.4" 0" βœ… Rainfall sufficient
Apr 4.3" 8.2" 0" βœ… Rainfall sufficient
May 4.3" 10.4" 0" βœ… Rainfall sufficient
Jun 4.3" 10.9" 0" βœ… Rainfall sufficient
Jul 4.3" 8.7" 0" βœ… Rainfall sufficient
Aug 4.3" 8.6" 0" βœ… Rainfall sufficient
Sep 4.3" 6.2" 0" βœ… Rainfall sufficient
Oct 4.3" 5.2" 0" βœ… Rainfall sufficient
Nov 4.3" 2.6" 1.7" πŸ’§ Light watering
Dec 4.3" 1.9" 2.4" 🚿 Regular watering

Water needs are for active growing months only (Feb–Dec in Galveston County). Supplement amounts are based on average rainfall β€” actual needs vary with temperature, soil, and mulching.

Daikon Planting Timeline β€” Galveston County, TX

Daikon Planting Calendar

Activity When Date Range
Direct Sow January 15 Jan 15 – Feb 5
Harvest March 12 Mar 12 – Apr 9
Fall Sowing October 12 Oct 12 – Oct 26

Plant 0.5" deep Β· 6" apart Β· Rows 12" apart

Month-by-Month Timeline

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

Growing Conditions

β˜€οΈ Sun

Full Sun (6-8+ hours)

πŸ’§ Water

Moderate β€” regular watering

πŸ“… Days to Maturity

50–70 days

πŸ§ͺ Soil pH

Needs 5.8–7 Β· Your soil: N/A

πŸ—ΊοΈ USDA Zone

Zone 9a

πŸ“† Growing Season

305 days in Galveston County

Growing Tips for Galveston County

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 Galveston County, TX?

Galveston County is in Zone 9a with an average last frost of February 5. Plan your Daikon planting based on this frost date β€” see the calendar above for exact timing.

What planting zone is Galveston County, TX?

Galveston County, Texas is in USDA Hardiness Zone 9a. The average last spring frost is February 5 and first fall frost is December 7.

🌱

Plan Your Garden with Confidence

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