When to Plant Corn in Dawson County, TX
Your May game plan for Dawson County, Texas
Welcome to May in Zone 8a. These are the moves that will have the biggest impact on your growing season.
June will be here before you know it — start on
- First harvests: corn
Corn is a warm-season grass grown for its sweet ears, which are best eaten soon after harvest. It is wind-pollinated and must be planted in blocks for good kernel fill.
Dawson County, Texas is in USDA Zone 8a. The average last spring frost is April 1 and the first fall frost is November 10, giving you a growing season of approximately 223 days.
At an elevation of 4,748 feet, Dawson County receives approximately 46.1 inches of rainfall annually with predominantly sandy loam soil. Summer highs average 102°F, so Corn may need afternoon shade and extra watering during peak heat. Sandy soil warms quickly in spring — great for early planting — but Corn will need more frequent watering and organic matter to retain nutrients.
Dawson County Soil Profile
Soil Type
Sandy Loam
Soil pH
7.8-8.4
Drainage
Well Drained
Plant Planting Risk Windows
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 Dawson County
How your county's soil matches Corn's growing requirements.
Soil pH
Your soil pH (7.8–8.4) is more alkaline than Corn prefers (6.0–7.0). Add sulfur or peat moss to lower pH.
Soil Texture
Sandy soil in Dawson County warms quickly in spring but drains fast. Corn will need more frequent watering and regular compost additions to retain nutrients.
Organic Matter
Organic matter is low (1.0%). Add 2-3 inches of compost before planting Corn.
How to Plant Corn
Succession Planting Corn
Sow every 6.9 weeks. Last sowing by Aug 02 to harvest before frost.
Plant Water Budget
Water stress score is 8/10 — consider drought-tolerant varieties and mulching
Monthly Watering Guide for Corn
Corn needs approximately 1.5 inches of water per week (6.5" per month). Here's how your county's rainfall compares month by month.
| Month | Corn Needs | Rainfall | You Supplement | Action |
|---|---|---|---|---|
| Jan | — | 3.7" | 0" | ❄️ Dormant |
| Feb | — | 2.7" | 0" | ❄️ Dormant |
| Mar | — | 2.6" | 0" | ❄️ Dormant |
| Apr | 6.5" | 1.6" | 4.9" | 🚿 Regular watering |
| May | 6.5" | 1" | 5.5" | 🚿 Regular watering |
| Jun | 6.5" | 1.9" | 4.6" | 🚿 Regular watering |
| Jul | 6.5" | 7.4" | 0" | ✅ Rainfall sufficient |
| Aug | 6.5" | 9.2" | 0" | ✅ Rainfall sufficient |
| Sep | 6.5" | 5.9" | 0.6" | 💧 Light watering |
| Oct | 6.5" | 4.2" | 2.3" | 💧 Light watering |
| Nov | 6.5" | 2.8" | 3.7" | 🚿 Regular watering |
| Dec | — | 3" | 0" | ❄️ Dormant |
Water needs are for active growing months only (Apr–Nov in Dawson County). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.
Corn 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.
Corn Planting Timeline — Dawson County, TX
Corn Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Direct Sow | April 8 | Apr 8 – Apr 29 |
| Harvest | June 10 | Jun 10 – Aug 5 |
Plant 1" deep · 12" apart · Rows 36" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | — |
| March | — |
| April | Direct Sow |
| May | — |
| June | Harvest |
| July | Harvest |
| August | Harvest |
| September | — |
| October | — |
| November | — |
| December | — |
Growing Conditions
☀️ Sun
Full Sun (6-8+ hours)
💧 Water
1.5"/week · 2-3 times/week
📅 Days to Maturity
60–100 days
🧪 Soil pH
Needs 6–7 · Your soil: too_alkaline
🗺️ USDA Zone
Zone 8a
📆 Growing Season
223 days in Dawson County
Growing Tips for Corn in Dawson County
Direct sow Corn outdoors after April 01 in Dawson County when soil has warmed and frost danger has passed.
Sandy soil in Dawson County dries quickly — mulch Corn with 2-3 inches of straw and water deeply 2-3 times per week rather than lightly every day.
With summer highs reaching 102°F in Dawson County, provide afternoon shade for Corn and water deeply in the morning.
Common pests for Corn in this region include corn earworm and corn borers. Use row covers early in the season and inspect plants weekly.
General growing tips
Plant in blocks of at least 4 rows rather than single rows for proper pollination. Direct sow after soil reaches 60F. Side-dress with nitrogen when plants are knee-high.
Recommended Corn Varieties for Dawson County
Heat-tolerant varieties that silk well in high temps
Companion Planting
Good Companions
Avoid Planting Near
Check more plant combinations with our Companion Planting Checker →
Corn in Other Locations
Frequently Asked Questions
When should I plant Corn in Dawson County, TX?
Dawson County is in Zone 8a with an average last frost of April 1. Plan your Corn planting based on this frost date — see the calendar above for exact timing.
What planting zone is Dawson County, TX?
Dawson County, Texas is in USDA Hardiness Zone 8a. The average last spring frost is April 1 and first fall frost is November 10.
Your Dawson County Garden Planner — Free
A 24-page printable planner built for Dawson 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.