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When to Plant Cucumber in Adair County, KY

Adair County, Kentucky Zone 7a May

May in the garden — Adair County, Kentucky

Your garden in Adair County, Kentucky is working on a schedule, even when you're not. Here's where you should be this May.

Avg. last frost April 17
Avg. first frost October 21
Soil temp (4") 57°F
Watering Moderate
Pest pressure Low
Daylight 14 hrs
  1. Plant out cucumber

    Frost risk is low now in Adair County, Kentucky. If you've been covering beds overnight, you can stop.

  2. Get cucumber seeds going inside

    Bottom-water once the first true leaves appear — it keeps stems dry and knocks back damping-off.

Coming up in June — start thinking about
  • First harvests: cucumber

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Cucumbers are a warm-season vine crop available in slicing and pickling varieties. They are prolific producers when given warmth, moisture, and a trellis to climb.

Adair County, Kentucky is in USDA Zone 7a. The average last spring frost is April 17 and the first fall frost is October 21, giving you a growing season of approximately 187 days.

At an elevation of 2,442 feet, Adair County receives approximately 42.3 inches of rainfall annually with predominantly silt loam soil. Summer highs average 89°F, providing good warmth for Cucumber during the growing season.

Adair County, KY (Zone 7a) Moderate season
187 days
Last Spring Frost April 17
187 growing days
First Fall Frost October 21

Adair County Soil Profile

Soil Type

Silt Loam

Soil pH

5.7-7.1

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (64 days to spare)
Start indoors: Mar 13 Transplant: Apr 24 🍅 Harvest: Jun 19 – Aug 14
Recommended (50%) ✓ Fits season (61 days to spare)
Start indoors: Mar 20 Transplant: May 1 🍅 Harvest: Jun 26 – Aug 21
Safe Start (90%) ✓ Fits season (55 days to spare)
Start indoors: Apr 6 Transplant: May 18 🍅 Harvest: Jul 13 – Sep 7

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 Adair County

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

Soil pH

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

Soil Texture

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

Drainage

Drainage is adequate for Cucumber.

Organic Matter

Organic matter is moderate (3.1%). Annual compost additions will help Cucumber.

How to Plant Cucumber

0.5"
Planting Depth
24"
Between Plants
48"
Between Rows

Succession Planting Cucumber

4
successive plantings in your 187-day season

Sow every 5.7 weeks. Last sowing by Aug 12 to harvest before frost.

Plant Water Budget

Plant needs
1.5″/week
Rainfall provides
1.0″/week
You supply
0.1″/week
Watering frequency Only during dry spells
Season total 166 gal / 100 sq ft

Monthly Watering Guide for Cucumber

Cucumber 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 Cucumber Needs Rainfall You Supplement Action
Jan 4.1" 0" ❄️ Dormant
Feb 3" 0" ❄️ Dormant
Mar 4.2" 0" ❄️ Dormant
Apr 6.5" 3.7" 2.8" 💧 Light watering
May 6.5" 3" 3.5" 🚿 Regular watering
Jun 6.5" 4.1" 2.4" 💧 Light watering
Jul 6.5" 4.1" 2.4" 💧 Light watering
Aug 6.5" 4.3" 2.2" 💧 Light watering
Sep 6.5" 2.9" 3.6" 🚿 Regular watering
Oct 6.5" 2.5" 4" 🚿 Regular watering
Nov 3.3" 0" ❄️ Dormant
Dec 3" 0" ❄️ Dormant

Water needs are for active growing months only (Apr–Oct in Adair County). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.

Cucumber 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.

Cucumber needs ~1,005 GDD — county provides 3,132 GDD Excellent fit

Cucumber Planting Timeline — Adair County, KY

Cucumber Planting Calendar

Activity When Date Range
Start Indoors March 20 Mar 20 – Apr 3
Transplant Outdoors May 1 May 1 – May 15
Direct Sow April 24 Apr 24 – May 15
Harvest June 26 Jun 26 – Aug 21

Plant 0.5" deep · 24" apart · Rows 48" apart

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

1.5"/week · Only during dry spells

📅 Days to Maturity

50–70 days

🧪 Soil pH

Needs 6–7 · Your soil: acceptable

🗺️ USDA Zone

Zone 7a

📆 Growing Season

187 days in Adair County

Growing Tips for Cucumber in Adair County

Direct sow Cucumber outdoors after April 17 in Adair County when soil has warmed and frost danger has passed.

Common pests for Cucumber in this region include squash vine borer and cucumber beetles. Use row covers early in the season and inspect plants weekly.

General growing tips

Direct sow after last frost or start indoors 3 weeks early. Provide a trellis for vining types to save space and improve air circulation. Harvest frequently to encourage production.

Companion Planting

Good Companions

Avoid Planting Near

  • Potatoes
  • Sage

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Cucumber in Adair County, KY?

Adair County is in Zone 7a with an average last frost of April 17. Plan your Cucumber planting based on this frost date — see the calendar above for exact timing.

What planting zone is Adair County, KY?

Adair County, Kentucky is in USDA Hardiness Zone 7a. The average last spring frost is April 17 and first fall frost is October 21.

🌱

Your Adair County Garden Planner — Free

A 24-page printable planner built for Adair County (Zone 7a). 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 Adair County, KY. Local conditions may vary. Last updated: May 2026.

Sources & credits

Every number on this page traces back to a primary horticulture or government data source. Click through to verify.