When to plant Corn in Morrow, GA
For Morrow, gardeners: plant Corn April 4 through April 25 once soil reads 50°F.
When to Plant Corn in Morrow, GA
July to-do list for Clayton County, Georgia
July rewards gardeners who work with the weather, not against it. Here's how to stay in step this month in Clayton County, Georgia.
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Start harvesting corn
This is the payoff month. Bring a basket, bring a friend, and get into the beds.
Coming up in August — start thinking about
- 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.
Morrow, Georgia is in USDA Zone 8b. The average last spring frost is March 28 and the first fall frost is November 3, giving you a growing season of approximately 220 days.
At an elevation of 136 feet, Clayton County receives approximately 56.2 inches of rainfall annually with predominantly clay loam soil. Summer highs average 92°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. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Corn root diseases.
Morrow Soil Profile
Soil Type
Clay Loam
Soil pH
5.6-6.8
Drainage
Well Drained
Corn 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 Morrow
How your county's soil matches Corn's growing requirements.
Soil pH
Your soil pH (5.6–6.8) overlaps with Corn's range (6.0–7.0), though not a perfect match.
Soil Texture
The clay loam soil in Clayton County is excellent for Corn — good drainage, moisture retention, and nutrient holding capacity.
Organic Matter
Organic matter is moderate (2.7%). Annual compost additions will help Corn.
How to Plant Corn
Succession Planting Corn
Sow every 6.9 weeks. Last sowing by Jul 26 to harvest before frost.
Corn 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 | — | 5" | 0" | ❄️ Dormant |
| Feb | — | 4.5" | 0" | ❄️ Dormant |
| Mar | 6.5" | 5.1" | 1.4" | 💧 Light watering |
| Apr | 6.5" | 4.1" | 2.4" | 💧 Light watering |
| May | 6.5" | 5.1" | 1.4" | 💧 Light watering |
| Jun | 6.5" | 4.4" | 2.1" | 💧 Light watering |
| Jul | 6.5" | 6.3" | 0.2" | 💧 Light watering |
| Aug | 6.5" | 5.6" | 0.9" | 💧 Light watering |
| Sep | 6.5" | 4.1" | 2.4" | 💧 Light watering |
| Oct | 6.5" | 4.1" | 2.4" | 💧 Light watering |
| Nov | 6.5" | 3.7" | 2.8" | 💧 Light watering |
| Dec | — | 4.1" | 0" | ❄️ Dormant |
Water needs are for active growing months only (Mar–Nov in Clayton 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 — Morrow, GA
Corn Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Direct Sow | April 4 | Apr 4 – Apr 25 |
| Harvest | June 6 | Jun 6 – Aug 1 |
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 8b
📆 Growing Season
220 days in Clayton County
Growing Tips for Corn in Morrow
Direct sow Corn outdoors after March 28 in Clayton County when soil has warmed and frost danger has passed.
With Clayton County's clay soil (30% 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
When should I plant Corn in Morrow, GA?
In Morrow, GA, plant Corn after the last frost (around March 28) and before the first frost (around November 3). Best results when soil holds above 50°F.
What growing zone is Morrow, GA for Corn?
Morrow sits in USDA Zone 8b. Corn grows reliably in zones 3a through 11b, so it's a good fit here.
Can Corn grow in Morrow's climate?
Yes — Corn grows well in Morrow's temperate climate. Morrow averages a 220-day frost-free season, with last frost around March 28 and first frost around November 3.
Your Clayton County Garden Planner — Free
A 22-page printable planner built for Clayton County (Zone 8b). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.