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When to Plant Sweet Potatoes in Glasscock County, TX

Glasscock County, Texas Zone 8a April

April to-do list for Glasscock County, Texas

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

Avg. last frost March 20
Avg. first frost November 14
Soil temp (4") 44°F
Watering High
Pest pressure Moderate
Daylight 12.8 hrs
  1. Move sweet potatoes into the garden

    Pinch off the lowest leaves on each seedling before you plant — it reduces water loss while the roots catch up.

A few tasks this April that'll pay off in May
  • Starting indoors: sweet potatoes

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Sweet potatoes are a warm-season root crop that produces nutritious, sweet tubers in orange, white, and purple varieties. They need a long, hot growing season.

Glasscock County, Texas is in USDA Zone 8a. The average last spring frost is March 20 and the first fall frost is November 14, giving you a growing season of approximately 239 days.

At an elevation of 4,774 feet, Glasscock County receives approximately 49.5 inches of rainfall annually with predominantly sandy loam soil. Summer highs average 100°F, so Sweet Potatoes may need afternoon shade and extra watering during peak heat. Sandy soil warms quickly in spring — great for early planting — but Sweet Potatoes will need more frequent watering and organic matter to retain nutrients.

Glasscock County, TX (Zone 8a) Long season
239 days
Last Spring Frost March 20
239 growing days
First Fall Frost November 14

Glasscock County Soil Profile

Soil Type

Sandy Loam

Soil pH

7.2-8.9

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (87 days to spare)
Start indoors: Jan 21 Transplant: Mar 25 🍅 Harvest: Jun 24 – Aug 12
Recommended (50%) ✓ Fits season (85 days to spare)
Start indoors: Jan 30 Transplant: Apr 3 🍅 Harvest: Jul 3 – Aug 21
Safe Start (90%) ✓ Fits season (79 days to spare)
Start indoors: Feb 20 Transplant: Apr 24 🍅 Harvest: Jul 24 – Sep 11

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 Glasscock County

How your county's soil matches Sweet Potatoes's growing requirements.

Soil pH

Your soil pH (7.2–8.9) is more alkaline than Sweet Potatoes prefers (5.5–6.5). Add sulfur or peat moss to lower pH.

Soil Texture

Sandy soil in Glasscock County warms quickly in spring but drains fast. Sweet Potatoes will need more frequent watering and regular compost additions to retain nutrients.

Organic Matter

Organic matter is low (1.1%). Add 2-3 inches of compost before planting Sweet Potatoes.

How to Plant Sweet Potatoes

1"
Planting Depth
15"
Between Plants
24"
Between Rows

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 332 gal / 100 sq ft
Drought risk

Water stress score is 6/10 — consider drought-tolerant varieties and mulching

Monthly Watering Guide for Sweet Potatoes

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

Month Sweet Potatoes Needs Rainfall You Supplement Action
Jan 3" 0" ❄️ Dormant
Feb 2.5" 0" ❄️ Dormant
Mar 4.3" 3.1" 1.2" 💧 Light watering
Apr 4.3" 1.6" 2.7" 🚿 Regular watering
May 4.3" 1" 3.3" 🚿 Regular watering
Jun 4.3" 1.5" 2.8" 🚿 Regular watering
Jul 4.3" 8.6" 0" ✅ Rainfall sufficient
Aug 4.3" 10.3" 0" ✅ Rainfall sufficient
Sep 4.3" 7.1" 0" ✅ Rainfall sufficient
Oct 4.3" 4.8" 0" ✅ Rainfall sufficient
Nov 4.3" 2.8" 1.5" 💧 Light watering
Dec 3.2" 0" ❄️ Dormant

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

Sweet Potatoes 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.

Sweet Potatoes needs ~2,625 GDD — county provides 5,975 GDD Excellent fit

Sweet Potatoes Planting Timeline — Glasscock County, TX

Sweet Potatoes Planting Calendar

Activity When Date Range
Start Indoors January 30 Jan 30 – Feb 13
Transplant Outdoors April 3 Apr 3 – Apr 17
Direct Sow March 27 Mar 27 – Apr 17
Harvest July 3 Jul 3 – Aug 21

Plant 1" deep · 15" apart · Rows 24" apart

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

1"/week · Only during dry spells

📅 Days to Maturity

90–120 days

🧪 Soil pH

Needs 5.5–6.5 · Your soil: too_alkaline

🗺️ USDA Zone

Zone 8a

📆 Growing Season

239 days in Glasscock County

Growing Tips for Sweet Potatoes in Glasscock County

Direct sow Sweet Potatoes outdoors after March 20 in Glasscock County when soil has warmed and frost danger has passed.

Sandy soil in Glasscock County dries quickly — mulch Sweet Potatoes with 2-3 inches of straw and water deeply 2-3 times per week rather than lightly every day.

With summer highs reaching 100°F in Glasscock County, provide afternoon shade for Sweet Potatoes and water deeply in the morning.

General growing tips

Plant slips (rooted sprouts) after soil is thoroughly warm. Build raised mounds for better root development. Cure harvested roots at 80-85F for 10 days to develop sweetness.

Companion Planting

Good Companions

Avoid Planting Near

  • Squash Summer

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Sweet Potatoes in Glasscock County, TX?

Glasscock County is in Zone 8a with an average last frost of March 20. Plan your Sweet Potatoes planting based on this frost date — see the calendar above for exact timing.

What planting zone is Glasscock County, TX?

Glasscock County, Texas is in USDA Hardiness Zone 8a. The average last spring frost is March 20 and first fall frost is November 14.

🌱

Your Glasscock County Garden Planner — Free

A 24-page printable planner built for Glasscock County (Zone 8a). 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 Glasscock County, TX. Local conditions may vary. Last updated: April 2026.

Sources & credits

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