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When to plant Soybeans in Nicholas County, KY

Nicholas County gardeners should plant Soybeans between April 23 and May 14 in spring. With Nicholas County's Zone 6b climate (last frost April 16), Soybeans needs 80–120 days to mature — plant by June 28 for a full harvest.

When to Plant Soybeans in Nicholas County, KY

Nicholas County, Kentucky Zone 6b July

Your July gardening checklist

If you only do a handful of things in the garden this July, make it these. They're sequenced around your zone's frost timing.

Avg. last frost April 16
Avg. first frost October 26
Soil temp (4") 78°F
Watering Moderate
Pest pressure High
Daylight 14.4 hrs
  1. Basket week: soybeans

    Check every 1–2 days. Many of these get tough or go to seed if you wait too long.

Coming up in August — start thinking about
  • First harvests: soybeans

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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.

Nicholas County, Kentucky is in USDA Zone 6b. The average last spring frost is April 16 and the first fall frost is October 26, giving you a growing season of approximately 193 days.

At an elevation of 1,533 feet, Nicholas County receives approximately 42.2 inches of rainfall annually with predominantly silt loam soil. Summer highs average 91°F, providing good warmth for Soybeans during the growing season.

Nicholas County, KY (Zone 6b) Moderate season
193 days
Last Spring Frost April 16
193 growing days
First Fall Frost October 26

Nicholas County Soil Profile

Soil Type

Silt Loam

Soil pH

5.7-7.1

Drainage

Well Drained

Soybeans Planting Risk Windows

Early Start (70% safe) ✓ Fits season (54 days to spare)
Transplant: Apr 9 🍅 Harvest: Jul 2 – Aug 27
Recommended (50%) ✓ Fits season (53 days to spare)
Transplant: Apr 16 🍅 Harvest: Jul 9 – Sep 3
Safe Start (90%) ✓ Fits season (48 days to spare)
Transplant: May 3 🍅 Harvest: Jul 26 – Sep 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 Nicholas County

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

Soil pH

Your soil pH (5.7–7.1) overlaps with Soybeans's range (6.0–7.0), though not a perfect match.

Soil Texture

The silt loam soil in Nicholas County is excellent for Soybeans — good drainage, moisture retention, and nutrient holding capacity.

Drainage

Drainage is adequate for Soybeans.

Organic Matter

Organic matter is moderate (2.4%). Annual compost additions will help Soybeans.

How to Plant Soybeans

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

Succession Planting Soybeans

2
successive plantings in your 193-day season

Sow every 9.1 weeks. Last sowing by Jun 28 to harvest before frost.

Soybeans Water Budget

Plant needs
1.0″/week
Rainfall provides
0.9″/week
Watering frequency Natural rainfall sufficient
Season total 0 gal / 100 sq ft

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 3.8" 0" ❄️ Dormant
Feb 3" 0" ❄️ Dormant
Mar 3.8" 0" ❄️ Dormant
Apr 4.3" 3.5" 0.8" 💧 Light watering
May 4.3" 3.5" 0.8" 💧 Light watering
Jun 4.3" 3.9" 0.4" 💧 Light watering
Jul 4.3" 3.7" 0.6" 💧 Light watering
Aug 4.3" 4.3" 0" ✅ Rainfall sufficient
Sep 4.3" 3.5" 0.8" 💧 Light watering
Oct 4.3" 2.7" 1.6" 💧 Light watering
Nov 3.2" 0" ❄️ Dormant
Dec 3.4" 0" ❄️ Dormant

Water needs are for active growing months only (Apr–Oct in Nicholas County). Supplement amounts are based on average rainfall — 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" — 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.

Soybeans needs ~1,825 GDD — county provides 3,522 GDD Excellent fit

Soybeans Planting Timeline — Nicholas County, KY

Soybeans Planting Calendar

Activity When Date Range
Direct Sow April 23 Apr 23 – May 14
Harvest July 16 Jul 16 – Sep 10

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

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

1"/week · Natural rainfall sufficient

📅 Days to Maturity

80–120 days

🧪 Soil pH

Needs 6–7 · Your soil: acceptable

🗺️ USDA Zone

Zone 6b

📆 Growing Season

193 days in Nicholas County

Growing Tips for Soybeans in Nicholas County

Direct sow Soybeans outdoors after April 16 in Nicholas County when soil has warmed and frost danger has passed.

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 Nicholas County, KY?

Nicholas County is in Zone 6b with an average last frost of April 16. Plan your Soybeans planting based on this frost date — see the calendar above for exact timing.

What planting zone is Nicholas County, KY?

Nicholas County, Kentucky is in USDA Hardiness Zone 6b. The average last spring frost is April 16 and first fall frost is October 26.

When should I plant Soybeans in Nicholas County, KY?

In Nicholas County, KY, plant Soybeans after the last frost (around April 16) and before the first frost (around October 26). Best results when soil holds above 50°F.

What growing zone is Nicholas County, KY for Soybeans?

Nicholas County sits in USDA Zone 6b. Soybeans grows reliably in zones 3a through 10b, so it's a good fit here.

Can Soybeans grow in Nicholas County's climate?

Yes — Soybeans grows well in Nicholas County's temperate climate. Nicholas County averages a 193-day frost-free season, with last frost around April 16 and first frost around October 26.

🌱

Your Nicholas County Garden Planner — Free

A 22-page printable planner built for Nicholas County (Zone 6b). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.

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

Sources & credits

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