When to plant Corn in Howard County, MD
Plant Corn in Howard County from April 15 to May 6 in spring. Howard County sits in USDA Zone 7b, with last frost around April 8 and first frost on November 1.
When to Plant Corn in Howard County, MD
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.
Howard County, Maryland is in USDA Zone 7b. The average last spring frost is April 8 and the first fall frost is November 1, giving you a growing season of approximately 207 days.
At an elevation of 753 feet, Howard County receives approximately 48.3 inches of rainfall annually with predominantly silt loam soil. Summer highs average 91°F, providing good warmth for Corn during the growing season.
Howard County Soil Profile
Soil Type
Silt Loam
Soil pH
5.6-7
Drainage
Well Drained
How Much Corn to Grow
For a family of 4, plant approximately 60 corn plants in about 120 sq ft. In Howard County's 207-day season, you'll have plenty of time for a full harvest. Plan your garden layout →
Monthly Watering Guide for Corn
Corn needs approximately 1 inches of water per week (4.3" per month). Here's how your county's rainfall compares month by month.
| Month | Corn Needs | Rainfall | You Supplement | Action |
|---|---|---|---|---|
| Jan | — | 3.6" | 0" | ❄️ Dormant |
| Feb | — | 3.4" | 0" | ❄️ Dormant |
| Mar | — | 4" | 0" | ❄️ Dormant |
| Apr | 4.3" | 4.7" | 0" | ✅ Rainfall sufficient |
| May | 4.3" | 3.8" | 0.5" | 💧 Light watering |
| Jun | 4.3" | 5" | 0" | ✅ Rainfall sufficient |
| Jul | 4.3" | 4.9" | 0" | ✅ Rainfall sufficient |
| Aug | 4.3" | 3.8" | 0.5" | 💧 Light watering |
| Sep | 4.3" | 3.9" | 0.4" | 💧 Light watering |
| Oct | 4.3" | 3.9" | 0.4" | 💧 Light watering |
| Nov | 4.3" | 3.5" | 0.8" | 💧 Light watering |
| Dec | — | 3.8" | 0" | ❄️ Dormant |
Water needs are for active growing months only (Apr–Nov in Howard County). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.
Corn Planting Timeline — Howard County, MD
Corn Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Direct Sow | April 15 | Apr 15 – May 6 |
| Harvest | June 17 | Jun 17 – Aug 12 |
Plant 1" deep · 12" apart · Rows 36" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | — |
| March | — |
| April | Direct Sow |
| May | Direct Sow |
| June | Harvest |
| July | Harvest |
| August | Harvest |
| September | — |
| October | — |
| November | — |
| December | — |
Growing Conditions
☀️ Sun
Full Sun (6-8+ hours)
💧 Water
Moderate — regular watering
📅 Days to Maturity
60–100 days
🧪 Soil pH
Needs 6–7 · Your soil: N/A
🗺️ USDA Zone
Zone 7b
📆 Growing Season
207 days in Howard County
Growing Tips for Howard County
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 Howard County, MD?
Howard County is in Zone 7b with an average last frost of April 8. Plan your Corn planting based on this frost date — see the calendar above for exact timing.
What planting zone is Howard County, MD?
Howard County, Maryland is in USDA Hardiness Zone 7b. The average last spring frost is April 8 and first fall frost is November 1.
When should I plant Corn in Howard County, MD?
In Howard County, MD, plant Corn after the last frost (around April 8) and before the first frost (around November 1). Best results when soil holds above 50°F.
What growing zone is Howard County, MD for Corn?
Howard County sits in USDA Zone 7b. Corn grows reliably in zones 3a through 11b, so it's a good fit here.
Can Corn grow in Howard County's climate?
Yes — Corn grows well in Howard County's temperate climate. Howard County averages a 207-day frost-free season, with last frost around April 8 and first frost around November 1.
Your Howard County Garden Planner — Free
A 22-page printable planner built for Howard County (Zone 7b). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.