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When to Plant Mizuna in Jim Hogg County, TX

Jim Hogg County, Texas Zone 9b May

This month in Jim Hogg County, Texas

We've pulled the most time-sensitive tasks for Jim Hogg County, Texas this May and put them front and centre. Tackle them in order.

Avg. last frost February 16
Avg. first frost December 5
Soil temp (4") 66°F
Watering Low
Pest pressure High
Daylight 13.3 hrs

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Mizuna is a mild-flavored Japanese mustard green with feathery, deeply serrated leaves. It is fast-growing and makes an excellent addition to salads and stir-fries.

Jim Hogg County, Texas is in USDA Zone 9b. The average last spring frost is February 16 and the first fall frost is December 5, giving you a growing season of approximately 292 days.

At an elevation of 4,270 feet, Jim Hogg County receives approximately 59.4 inches of rainfall annually with predominantly loam soil. Summer highs average 96°F, so Mizuna may need afternoon shade and extra watering during peak heat. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Mizuna root diseases.

Jim Hogg County, TX (Zone 9b) Year-round
292 days
Last Spring Frost February 16
292 growing days
First Fall Frost December 5

Jim Hogg County Soil Profile

Soil Type

Loam

Soil pH

6.2-7.3

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (240 days to spare)
Start indoors: Dec 29 Transplant: Jan 26 🍅 Harvest: Mar 2 – Mar 30
Recommended (50%) ✓ Fits season (229 days to spare)
Start indoors: Jan 19 Transplant: Feb 16 🍅 Harvest: Mar 23 – Apr 20
Safe Start (90%) ✓ Fits season (217 days to spare)
Start indoors: Feb 17 Transplant: Mar 17 🍅 Harvest: Apr 21 – May 19

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 Jim Hogg County

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

Soil pH

Your soil pH (6.2–7.3) is within Mizuna's preferred range (6.0–7.5).

Soil Texture

The loam soil in Jim Hogg County is excellent for Mizuna — good drainage, moisture retention, and nutrient holding capacity.

Organic Matter

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

How to Plant Mizuna

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 Mizuna

11
successive plantings in your 292-day season

Sow every 3.4 weeks. Last sowing by Oct 21 to harvest before frost.

For a dedicated fall crop, sow by Oct 10.

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 387 gal / 100 sq ft

Monthly Watering Guide for Mizuna

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

Month Mizuna Needs Rainfall You Supplement Action
Jan 1.3" 0" ❄️ Dormant
Feb 4.3" 2" 2.3" 🚿 Regular watering
Mar 4.3" 3.4" 0.9" 💧 Light watering
Apr 4.3" 6.6" 0" ✅ Rainfall sufficient
May 4.3" 9.2" 0" ✅ Rainfall sufficient
Jun 4.3" 10.7" 0" ✅ Rainfall sufficient
Jul 4.3" 6.6" 0" ✅ Rainfall sufficient
Aug 4.3" 6.9" 0" ✅ Rainfall sufficient
Sep 4.3" 5.8" 0" ✅ Rainfall sufficient
Oct 4.3" 3.6" 0.7" 💧 Light watering
Nov 4.3" 2" 2.3" 🚿 Regular watering
Dec 4.3" 1.4" 2.9" 🚿 Regular watering

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

Mizuna 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" — every day above 50°F 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.

Mizuna needs ~825 GDD — county provides 6,446 GDD Excellent fit

Mizuna Planting Timeline — Jim Hogg County, TX

Mizuna Planting Calendar

Activity When Date Range
Start Indoors January 19 Jan 19 – Feb 2
Transplant Outdoors February 16 Feb 16 – Mar 2
Direct Sow January 26 Jan 26 – Feb 16
Harvest March 23 Mar 23 – Apr 20
Fall Sowing October 10 Oct 10 – Oct 24

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

Month-by-Month Timeline

MonthActivities
January Start Indoors Direct Sow
February Start Indoors Transplant Outdoors Direct Sow
March Transplant Outdoors Harvest
April Harvest
May
June
July
August
September
October Fall Sowing
November
December

Growing Conditions

☀️ Sun

Partial Shade (3-6 hours)

💧 Water

1"/week · Only during dry spells

📅 Days to Maturity

30–45 days

🧪 Soil pH

Needs 6–7.5 · Your soil: ideal

🗺️ USDA Zone

Zone 9b

📆 Growing Season

292 days in Jim Hogg County

Growing Tips for Mizuna in Jim Hogg County

Direct sow Mizuna outdoors after February 16 in Jim Hogg County when soil has warmed and frost danger has passed.

With summer highs reaching 96°F in Jim Hogg County, provide afternoon shade for Mizuna and water deeply in the morning.

Your generous 293.0-day season in Jim Hogg County allows multiple plantings of Mizuna. Sow every 15.0 days for continuous harvest.

Common pests for Mizuna 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. Harvest outer leaves as needed for a cut-and-come-again approach. Mizuna is one of the most cold-tolerant Asian greens.

Companion Planting

Good Companions

Avoid Planting Near

  • Strawberries

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Mizuna in Jim Hogg County, TX?

Jim Hogg County is in Zone 9b with an average last frost of February 16. Plan your Mizuna planting based on this frost date — see the calendar above for exact timing.

What planting zone is Jim Hogg County, TX?

Jim Hogg County, Texas is in USDA Hardiness Zone 9b. The average last spring frost is February 16 and first fall frost is December 5.

🌱

Your Jim Hogg County Garden Planner — Free

A 24-page printable planner built for Jim Hogg County (Zone 9b). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.

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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 Jim Hogg County, TX. Local conditions may vary. Last updated: May 2026.

Sources & credits

Every number on this page traces back to a primary horticulture or government data source. Click through to verify.