When to Plant Corn in Grenada County, MS
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.
Grenada County, Mississippi is in USDA Zone 7b. The average last spring frost is March 30 and the first fall frost is October 31, giving you a growing season of approximately 215 days.
At an elevation of 101 feet, Grenada County receives approximately 49.2 inches of rainfall annually with predominantly clay loam soil. Summer highs average 90°F, providing good warmth for Corn during the growing season. Clay soil retains moisture well for Corn, but amend with compost to improve drainage and prevent root rot.
Grenada County Soil Profile
Soil Type
Clay Loam
Soil pH
5.6-6.4
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 Grenada County
How your county's soil matches Corn's growing requirements.
Soil pH
Your soil pH (5.6–6.4) overlaps with Corn's range (6.0–7.0), though not a perfect match.
Soil Texture
The clay loam soil in Grenada County is excellent for Corn — good drainage, moisture retention, and nutrient holding capacity.
Organic Matter
Organic matter is moderate (2.5%). Annual compost additions will help Corn.
How to Plant Corn
Succession Planting Corn
Sow every 6.9 weeks. Last sowing by Jul 23 to harvest before frost.
Plant Water Budget
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 | — | 4.5" | 0" | ❄️ Dormant |
| Feb | — | 3.9" | 0" | ❄️ Dormant |
| Mar | 6.5" | 4.4" | 2.1" | 💧 Light watering |
| Apr | 6.5" | 3.7" | 2.8" | 💧 Light watering |
| May | 6.5" | 3.8" | 2.7" | 💧 Light watering |
| Jun | 6.5" | 4.3" | 2.2" | 💧 Light watering |
| Jul | 6.5" | 5.7" | 0.8" | 💧 Light watering |
| Aug | 6.5" | 4.8" | 1.7" | 💧 Light watering |
| Sep | 6.5" | 3.5" | 3" | 💧 Light watering |
| Oct | 6.5" | 3.3" | 3.2" | 💧 Light watering |
| Nov | — | 3.8" | 0" | ❄️ Dormant |
| Dec | — | 3.5" | 0" | ❄️ Dormant |
Water needs are for active growing months only (Mar–Oct in Grenada 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 — Grenada County, MS
Corn Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Direct Sow | April 6 | Apr 6 – Apr 27 |
| Harvest | June 8 | Jun 8 – Aug 3 |
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 · 1-2 times/week
📅 Days to Maturity
60–100 days
🧪 Soil pH
Needs 6–7 · Your soil: acceptable
🗺️ USDA Zone
Zone 7b
📆 Growing Season
215 days in Grenada County
Growing Tips for Corn in Grenada County
Direct sow Corn outdoors after March 30 in Grenada County when soil has warmed and frost danger has passed.
With Grenada County's clay soil (28% clay), work in 3-4 inches of compost before planting Corn. Avoid tilling when soil is wet to prevent compaction.
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.
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 Grenada County, MS?
Grenada County is in Zone 7b with an average last frost of March 30. Plan your Corn planting based on this frost date — see the calendar above for exact timing.
What planting zone is Grenada County, MS?
Grenada County, Mississippi is in USDA Hardiness Zone 7b. The average last spring frost is March 30 and first fall frost is October 31.
Plan Your Garden with Confidence
Get our free Garden Planner — designed to help Grenada County gardeners in Zone 7b organize planting dates, track what's growing, and never miss a planting window.
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