When to plant Sweet Corn in Howard County, AR
Howard County's spring Sweet Corn window runs April 7 through April 28. most warm-season crops establish quickly once soil holds above 60°F.
When to Plant Sweet Corn in Howard County, AR
This month in Howard County, Arkansas
June rewards gardeners who work with the weather, not against it. Here's how to stay in step this month in Howard County, Arkansas.
Sweet corn is bred for high sugar content in its kernels, which convert to starch rapidly after harvest. Modern supersweet varieties hold their sweetness longer.
Howard County, Arkansas is in USDA Zone 8a. The average last spring frost is March 31 and the first fall frost is November 3, giving you a growing season of approximately 217 days.
At an elevation of 537 feet, Howard County receives approximately 50.7 inches of rainfall annually with predominantly silt loam soil. Summer highs average 88°F, providing good warmth for Sweet Corn during the growing season. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Sweet Corn root diseases.
Howard County Soil Profile
Soil Type
Silt Loam
Soil pH
5.5-7.1
Drainage
Well Drained
Sweet 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 Howard County
How your county's soil matches Sweet Corn's growing requirements.
Soil pH
Your soil pH (5.5–7.1) overlaps with Sweet Corn's range (6.0–7.0), though not a perfect match.
Soil Texture
The silt loam soil in Howard County is excellent for Sweet Corn — good drainage, moisture retention, and nutrient holding capacity.
Organic Matter
Organic matter is moderate (2.9%). Annual compost additions will help Sweet Corn.
How to Plant Sweet Corn
Succession Planting Sweet Corn
Sow every 6.9 weeks. Last sowing by Aug 05 to harvest before frost.
Sweet Corn Water Budget
Monthly Watering Guide for Sweet Corn
Sweet 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 | Sweet Corn Needs | Rainfall | You Supplement | Action |
|---|---|---|---|---|
| Jan | — | 4.4" | 0" | ❄️ Dormant |
| Feb | — | 3.7" | 0" | ❄️ Dormant |
| Mar | 6.5" | 5.1" | 1.4" | 💧 Light watering |
| Apr | 6.5" | 3.6" | 2.9" | 💧 Light watering |
| May | 6.5" | 3.9" | 2.6" | 💧 Light watering |
| Jun | 6.5" | 4.5" | 2" | 💧 Light watering |
| Jul | 6.5" | 6.1" | 0.4" | 💧 Light watering |
| Aug | 6.5" | 5.2" | 1.3" | 💧 Light watering |
| Sep | 6.5" | 3.6" | 2.9" | 💧 Light watering |
| Oct | 6.5" | 3.1" | 3.4" | 🚿 Regular watering |
| Nov | 6.5" | 3.7" | 2.8" | 💧 Light watering |
| Dec | — | 4" | 0" | ❄️ Dormant |
Water needs are for active growing months only (Mar–Nov in Howard County). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.
Sweet 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.
Sweet Corn Planting Timeline — Howard County, AR
Sweet Corn Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Direct Sow | April 7 | Apr 7 – Apr 28 |
| Harvest | June 9 | Jun 9 – Jul 21 |
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 | — |
| September | — |
| October | — |
| November | — |
| December | — |
Growing Conditions
☀️ Sun
Full Sun (6-8+ hours)
💧 Water
1.5"/week · 1-2 times/week
📅 Days to Maturity
60–90 days
🧪 Soil pH
Needs 6–7 · Your soil: acceptable
🗺️ USDA Zone
Zone 8a
📆 Growing Season
217 days in Howard County
Growing Tips for Sweet Corn in Howard County
Direct sow Sweet Corn outdoors after March 31 in Howard County when soil has warmed and frost danger has passed.
Common pests for Sweet 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 for wind pollination. Direct sow after soil is warm. Isolate supersweet varieties from other corn types to prevent cross-pollination.
Companion Planting
Good Companions
Avoid Planting Near
Check more plant combinations with our Companion Planting Checker →
Sweet Corn in Other Locations
Frequently Asked Questions
When should I plant Sweet Corn in Howard County, AR?
Howard County is in Zone 8a with an average last frost of March 31. Plan your Sweet Corn planting based on this frost date — see the calendar above for exact timing.
What planting zone is Howard County, AR?
Howard County, Arkansas is in USDA Hardiness Zone 8a. The average last spring frost is March 31 and first fall frost is November 3.
When should I plant Sweet Corn in Howard County, AR?
In Howard County, AR, plant Sweet Corn after the last frost (around March 31) and before the first frost (around November 3). Best results when soil holds above 50°F.
What growing zone is Howard County, AR for Sweet Corn?
Howard County sits in USDA Zone 8a. Sweet Corn grows reliably in zones 3a through 11b, so it's a good fit here.
Can Sweet Corn grow in Howard County's climate?
Yes — Sweet Corn grows well in Howard County's temperate climate. Howard County averages a 217-day frost-free season, with last frost around March 31 and first frost around November 3.
Your Howard County Garden Planner — Free
A 22-page printable planner built for Howard 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.