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When to Plant Grapes in Jim Hogg County, TX

Jim Hogg County, Texas Zone 9b May

Top priorities for Jim Hogg County, Texas gardeners in May

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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Grapes are vigorous climbing vines producing clusters of sweet or wine-quality fruits. They require training on a trellis or arbor and annual pruning for best production.

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 Grapes may need afternoon shade and extra watering during peak heat. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Grapes 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
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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
Transplant: Feb 9
Recommended (50%) ✓ Fits season
Transplant: Mar 2
Safe Start (90%) ✓ Fits season
Transplant: Mar 31

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 Grapes's growing requirements.

Soil pH

Your soil pH (6.2–7.3) overlaps with Grapes's range (5.5–7.0), though not a perfect match.

Soil Texture

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

Organic Matter

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

How to Plant Grapes

72"
Between Plants
96"
Between Rows

Plant Water Budget

Plant needs
0.7″/week
Rainfall provides
0.9″/week
Watering frequency Natural rainfall sufficient
Season total 0 gal / 100 sq ft

Monthly Watering Guide for Grapes

Grapes needs approximately 0.7 inches of water per week (3" per month). Here's how your county's rainfall compares month by month.

Month Grapes Needs Rainfall You Supplement Action
Jan 1.3" 0" ❄️ Dormant
Feb 3" 2" 1" 💧 Light watering
Mar 3" 3.4" 0" ✅ Rainfall sufficient
Apr 3" 6.6" 0" ✅ Rainfall sufficient
May 3" 9.2" 0" ✅ Rainfall sufficient
Jun 3" 10.7" 0" ✅ Rainfall sufficient
Jul 3" 6.6" 0" ✅ Rainfall sufficient
Aug 3" 6.9" 0" ✅ Rainfall sufficient
Sep 3" 5.8" 0" ✅ Rainfall sufficient
Oct 3" 3.6" 0" ✅ Rainfall sufficient
Nov 3" 2" 1" 💧 Light watering
Dec 3" 1.4" 1.6" 🚿 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.

Grapes 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.

Grapes needs ~20,075 GDD — county provides 6,446 GDD May not mature

Grapes Planting Timeline — Jim Hogg County, TX

Grapes Planting Calendar

Activity When Date Range
Transplant Outdoors March 2 Mar 2 – Mar 16

· 72" apart · Rows 96" apart

Month-by-Month Timeline

MonthActivities
January
February
March Transplant Outdoors
April
May
June
July
August
September
October
November
December
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Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

0.7"/week · Natural rainfall sufficient

📅 Days to Maturity

730–1095 days

🧪 Soil pH

Needs 5.5–7 · Your soil: acceptable

🗺️ USDA Zone

Zone 9b

📆 Growing Season

292 days in Jim Hogg County

Growing Tips for Grapes in Jim Hogg County

Direct sow Grapes 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 Grapes and water deeply in the morning.

Your 293.0-day growing season in Jim Hogg County is tight for Grapes (730.0-1095.0 days to maturity). Start indoors and choose early-maturing varieties.

General growing tips

Provide a strong trellis system. Prune heavily in late winter while dormant. Thin fruit clusters for larger berries. Good air circulation prevents fungal diseases.

Companion Planting

Good Companions

Avoid Planting Near

  • Cabbage
  • Radish

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

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

Jim Hogg County is in Zone 9b with an average last frost of February 16. Plan your Grapes 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.

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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.