When to plant Corn in Long Key, FL
Plant Corn in Long Key, when soil hits 50°F — usually January 29. Continue planting through February 19 for the spring crop.
When to Plant Corn in Long Key, FL
This month in Monroe County, Florida
Each item below is timed to Monroe County, Florida's frost dates and soil temperatures. Skip nothing, stress about nothing.
-
Plan the fall garden
Make a planting map for August. Tomatoes, peppers, brassicas, lettuce, root crops all go in over the next 8 weeks. Soil amendments and irrigation prep happen now.
-
Keep heat-survivor crops productive
Daily harvest of okra and southern peas keeps plants producing. Let pods over-mature and the plant stops setting new fruit.
-
Watch for hurricane prep season
August-October is hurricane season. Stake young trees, secure rain barrels, and plan how to protect tender transplants from high winds.
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.
Long Key, Florida is in USDA Zone 11b. The average last spring frost is January 22 and the first fall frost is April 15, giving you a growing season of approximately 83 days.
At an elevation of 169 feet, Monroe County receives approximately 55.6 inches of rainfall annually with predominantly sand soil. Summer highs average 93°F, providing good warmth for Corn during the growing season. Sandy soil warms quickly in spring — great for early planting — but Corn will need more frequent watering and organic matter to retain nutrients. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Corn root diseases.
Long Key Soil Profile
Soil Type
Sand
Soil pH
4.8-5.7
Drainage
Well Drained
Soil Compatibility in Long Key
How your county's soil matches Corn's growing requirements.
Soil pH
Your soil pH (4.8–5.7) is more acidic than Corn prefers (6.0–7.0). Add garden lime to raise pH.
Soil Texture
Sandy soil in Monroe County warms quickly in spring but drains fast. Corn will need more frequent watering and regular compost additions to retain nutrients.
Drainage
Drainage is adequate for Corn.
Organic Matter
Organic matter is low (1.3%). Add 2-3 inches of compost before planting Corn.
How to Plant Corn
How Much Corn to Grow
For a family of 4, plant approximately 60 corn plants in about 180 sq ft. In Monroe County's 365-day season, you'll have plenty of time for a full harvest. Plan your garden layout →
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 | 6.5" | 2.3" | 4.2" | 🚿 Regular watering |
| Feb | 6.5" | 2.7" | 3.8" | 🚿 Regular watering |
| Mar | 6.5" | 3.8" | 2.7" | 💧 Light watering |
| Apr | 6.5" | 2.5" | 4" | 🚿 Regular watering |
| May | 6.5" | 3.2" | 3.3" | 🚿 Regular watering |
| Jun | 6.5" | 7.1" | 0" | ✅ Rainfall sufficient |
| Jul | 6.5" | 8.2" | 0" | ✅ Rainfall sufficient |
| Aug | 6.5" | 8.7" | 0" | ✅ Rainfall sufficient |
| Sep | 6.5" | 7.7" | 0" | ✅ Rainfall sufficient |
| Oct | 6.5" | 4.8" | 1.7" | 💧 Light watering |
| Nov | — | 2.2" | 0" | ❄️ Dormant |
| Dec | — | 2.5" | 0" | ❄️ Dormant |
Water needs are for active growing months only (Jan–Oct in Monroe 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 — Long Key, FL
Corn Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Direct Sow | January 29 | Jan 29 – Feb 19 |
| Harvest | April 2 | Apr 2 – May 28 |
Plant 1" deep · 12" apart · Rows 36" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | Direct Sow |
| February | Direct Sow |
| March | — |
| April | Harvest |
| May | Harvest |
| June | — |
| July | — |
| August | — |
| 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_acidic
🗺️ USDA Zone
Zone 11b
📆 Growing Season
365 days in Monroe County
Growing Tips for Corn in Long Key
Direct sow Corn outdoors after January 22 in Monroe County when soil has warmed and frost danger has passed.
Sandy soil in Monroe County dries quickly — mulch Corn with 2-3 inches of straw and water deeply 2-3 times per week rather than lightly every day.
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 Long Key, FL?
In Long Key, FL, plant Corn after the last frost (around January 1) and before the first frost (around December 31). Best results when soil holds above 50°F.
What growing zone is Long Key, FL for Corn?
Long Key sits in USDA Zone 11b. Corn grows reliably in zones 3a through 11b, so it's a good fit here.
Can Corn grow in Long Key's climate?
Yes — Corn grows well in Long Key's temperate climate. Long Key averages a 365-day frost-free season, with last frost around January 1 and first frost around December 31.
Your Monroe County Garden Planner — Free
A 22-page printable planner built for Monroe County (Zone 11b). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.