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When to Plant Corn in Okeechobee County, FL

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.

Okeechobee County, Florida is in USDA Zone 9b. The average last spring frost is January 25 and the first fall frost is December 20, giving you a growing season of approximately 329 days.

At an elevation of 139 feet, Okeechobee County receives approximately 49.6 inches of rainfall annually with predominantly sand soil. Summer highs average 101ยฐF, so Corn may need afternoon shade and extra watering during peak heat. Sandy soil warms quickly in spring โ€” great for early planting โ€” but Corn will need more frequent watering and organic matter to retain nutrients.

Okeechobee County, FL (Zone 9b) Year-round
329 days
Last Spring Frost January 25
329 growing days
First Fall Frost December 20

Okeechobee County Soil Profile

Soil Type

Sand

Soil pH

5.2-5.8

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (204 days to spare)
Transplant: Jan 19 🍅 Harvest: Mar 23 – May 18
Recommended (50%) ✓ Fits season (210 days to spare)
Transplant: Jan 25 🍅 Harvest: Mar 29 – May 24
Safe Start (90%) ✓ Fits season (188 days to spare)
Transplant: Feb 21 🍅 Harvest: Apr 25 – Jun 20

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 Okeechobee County

How your county's soil matches Corn's growing requirements.

Soil pH

Your soil pH (5.2โ€“5.8) is more acidic than Corn prefers (6.0โ€“7.0). Add garden lime to raise pH.

Soil Texture

Sandy soil in Okeechobee 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 (1.7%). Add 2-3 inches of compost before planting Corn.

How to Plant Corn

1"
Planting Depth
12"
Between Plants
36"
Between Rows

Succession Planting Corn

6
successive plantings in your 329-day season

Sow every 6.9 weeks. Last sowing by Sep 11 to harvest before frost.

Plant Water Budget

Plant needs
1.5″/week
Rainfall provides
0.6″/week
You supply
1.6″/week
Watering frequency 2-3 times/week
Season total 4,648 gal / 100 sq ft
Drought risk

Water stress score is 6/10 โ€” consider drought-tolerant varieties and mulching

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" 2.5" 4" ๐Ÿšฟ Regular watering
Feb 6.5" 2.4" 4.1" ๐Ÿšฟ Regular watering
Mar 6.5" 3.2" 3.3" ๐Ÿšฟ Regular watering
Apr 6.5" 2.2" 4.3" ๐Ÿšฟ Regular watering
May 6.5" 3.5" 3" ๐Ÿ’ง Light watering
Jun 6.5" 6.8" 0" โœ… Rainfall sufficient
Jul 6.5" 6.9" 0" โœ… Rainfall sufficient
Aug 6.5" 7.6" 0" โœ… Rainfall sufficient
Sep 6.5" 6.6" 0" โœ… Rainfall sufficient
Oct 6.5" 3.5" 3" ๐Ÿ’ง Light watering
Nov 6.5" 2.2" 4.3" ๐Ÿšฟ Regular watering
Dec 6.5" 2.1" 4.4" ๐Ÿšฟ Regular watering

Water needs are for active growing months only (Janโ€“Dec in Okeechobee County). Supplement amounts are based on average rainfall โ€” 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" โ€” every day above 50ยฐF 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 needs ~2,060 GDD — county provides 8,497 GDD Excellent fit

Corn Planting Timeline โ€” Okeechobee County, FL

Corn Planting Calendar

Activity When Date Range
Direct Sow February 1 Feb 1 โ€“ Feb 22
Harvest April 5 Apr 5 โ€“ May 31

Plant 1" deep ยท 12" apart ยท Rows 36" apart

Month-by-Month Timeline

MonthActivities
January โ€”
February Direct Sow
March โ€”
April Harvest
May Harvest
June โ€”
July โ€”
August โ€”
September โ€”
October โ€”
November โ€”
December โ€”

Growing Conditions

โ˜€๏ธ Sun

Full Sun (6-8+ hours)

๐Ÿ’ง Water

1.5"/week ยท 2-3 times/week

๐Ÿ“… Days to Maturity

60โ€“100 days

๐Ÿงช Soil pH

Needs 6โ€“7 ยท Your soil: too_acidic

๐Ÿ—บ๏ธ USDA Zone

Zone 9b

๐Ÿ“† Growing Season

329 days in Okeechobee County

Growing Tips for Corn in Okeechobee County

Direct sow Corn outdoors after January 25 in Okeechobee County when soil has warmed and frost danger has passed.

Sandy soil in Okeechobee County dries quickly โ€” mulch Corn with 2-3 inches of straw and water deeply 2-3 times per week rather than lightly every day.

With summer highs reaching 101ยฐF in Okeechobee County, provide afternoon shade for Corn and water deeply in the morning.

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.

Recommended Corn Varieties for Okeechobee County

Heat-tolerant varieties that silk well in high temps

Silver Queen (92d) Incredible (85d)

Companion Planting

Good Companions

Avoid Planting Near

  • Tomatoes
  • Celery

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Corn in Okeechobee County, FL?

Okeechobee County is in Zone 9b with an average last frost of January 25. Plan your Corn planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Okeechobee County, FL?

Okeechobee County, Florida is in USDA Hardiness Zone 9b. The average last spring frost is January 25 and first fall frost is December 20.

๐ŸŒฑ

Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Okeechobee County gardeners in Zone 9b organize planting dates, track what's growing, and never miss a planting window.

Get Your Free Garden Planner →

Free download. Plan your entire garden season in minutes.

Data sources: USDA Plant Hardiness Zone Map (2023), NOAA 30-Year Climate Normals. Frost dates are based on 50% probability averages for Okeechobee County, FL. Local conditions may vary. Last updated: April 2026.