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When to Plant Soybeans in Citrus County, FL

Soybeans (edamame) are a high-protein legume that fixes nitrogen in the soil. Fresh green soybeans harvested at the edamame stage are a nutritious snack.

Citrus County, Florida is in USDA Zone 9a. The average last spring frost is February 14 and the first fall frost is December 2, giving you a growing season of approximately 291 days.

At an elevation of 423 feet, Citrus County receives approximately 55.9 inches of rainfall annually with predominantly sand soil. Summer highs average 98ยฐF, so Soybeans may need afternoon shade and extra watering during peak heat. Sandy soil warms quickly in spring โ€” great for early planting โ€” but Soybeans will need more frequent watering and organic matter to retain nutrients. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Soybeans root diseases.

Citrus County, FL (Zone 9a) Year-round
291 days
Last Spring Frost February 14
291 growing days
First Fall Frost December 2

Citrus County Soil Profile

Soil Type

Sand

Soil pH

5.2-6.2

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (154 days to spare)
Transplant: Feb 3 🍅 Harvest: Apr 28 – Jun 23
Recommended (50%) ✓ Fits season (151 days to spare)
Transplant: Feb 14 🍅 Harvest: May 9 – Jul 4
Safe Start (90%) ✓ Fits season (143 days to spare)
Transplant: Mar 15 🍅 Harvest: Jun 7 – Aug 2

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 Citrus County

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

Soil pH

Your soil pH (5.2โ€“6.2) is more acidic than Soybeans prefers (6.0โ€“7.0). Add garden lime to raise pH.

Soil Texture

Sandy soil in Citrus County warms quickly in spring but drains fast. Soybeans will need more frequent watering and regular compost additions to retain nutrients.

Organic Matter

Organic matter is low (1.5%). Add 2-3 inches of compost before planting Soybeans.

How to Plant Soybeans

1"
Planting Depth
15"
Between Plants
24"
Between Rows

Succession Planting Soybeans

4
successive plantings in your 291-day season

Sow every 9.1 weeks. Last sowing by Aug 04 to harvest before frost.

Plant Water Budget

Plant needs
1.0″/week
Rainfall provides
0.8″/week
You supply
0.2″/week
Watering frequency Only during dry spells
Season total 611 gal / 100 sq ft
Drought risk

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

Monthly Watering Guide for Soybeans

Soybeans needs approximately 1 inches of water per week (4.3" per month). Here's how your county's rainfall compares month by month.

Month Soybeans Needs Rainfall You Supplement Action
Jan โ€” 2.9" 0" โ„๏ธ Dormant
Feb 4.3" 3.3" 1" ๐Ÿ’ง Light watering
Mar 4.3" 2.9" 1.4" ๐Ÿ’ง Light watering
Apr 4.3" 2.9" 1.4" ๐Ÿ’ง Light watering
May 4.3" 4" 0.3" ๐Ÿ’ง Light watering
Jun 4.3" 7.8" 0" โœ… Rainfall sufficient
Jul 4.3" 7.2" 0" โœ… Rainfall sufficient
Aug 4.3" 8.3" 0" โœ… Rainfall sufficient
Sep 4.3" 7.5" 0" โœ… Rainfall sufficient
Oct 4.3" 4.6" 0" โœ… Rainfall sufficient
Nov 4.3" 2" 2.3" ๐Ÿšฟ Regular watering
Dec 4.3" 2.5" 1.8" ๐Ÿ’ง Light watering

Water needs are for active growing months only (Febโ€“Dec in Citrus County). Supplement amounts are based on average rainfall โ€” actual needs vary with temperature, soil, and mulching.

Soybeans 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.

Soybeans needs ~2,350 GDD — county provides 6,862 GDD Excellent fit

Soybeans Planting Timeline โ€” Citrus County, FL

Soybeans Planting Calendar

Activity When Date Range
Direct Sow February 21 Feb 21 โ€“ Mar 14
Harvest May 16 May 16 โ€“ Jul 11

Plant 1" deep ยท 15" apart ยท Rows 24" apart

Month-by-Month Timeline

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

Growing Conditions

โ˜€๏ธ Sun

Full Sun (6-8+ hours)

๐Ÿ’ง Water

1"/week ยท Only during dry spells

๐Ÿ“… Days to Maturity

80โ€“120 days

๐Ÿงช Soil pH

Needs 6โ€“7 ยท Your soil: too_acidic

๐Ÿ—บ๏ธ USDA Zone

Zone 9a

๐Ÿ“† Growing Season

291 days in Citrus County

Growing Tips for Soybeans in Citrus County

Direct sow Soybeans outdoors after February 14 in Citrus County when soil has warmed and frost danger has passed.

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

With summer highs reaching 98ยฐF in Citrus County, provide afternoon shade for Soybeans and water deeply in the morning.

Common pests for Soybeans in this region include bean beetles and aphids. Use row covers early in the season and inspect plants weekly.

General growing tips

Direct sow after soil warms to 60F. Plant in blocks rather than rows for better pollination. Harvest for edamame when pods are plump and bright green.

Companion Planting

Good Companions

Avoid Planting Near

  • Onion
  • Garlic

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Soybeans in Citrus County, FL?

Citrus County is in Zone 9a with an average last frost of February 14. Plan your Soybeans planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Citrus County, FL?

Citrus County, Florida is in USDA Hardiness Zone 9a. The average last spring frost is February 14 and first fall frost is December 2.

๐ŸŒฑ

Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Citrus County gardeners in Zone 9a 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 Citrus County, FL. Local conditions may vary. Last updated: April 2026.